Gospel of the Kingdom
God's Kingdom is Coming
The Gospel is the good news about the coming kingdom of God / heaven.
Though it seems like the Kingdom of God and the Kingdom of Heaven are referring to different things, it is clear that both phrases are referring to the same thing. The phrase “kingdom of God” occurs 68 times in 10 different New Testament books, while “kingdom of heaven” occurs only 32 times, and only in the Gospel of Matthew. Mark and Luke used “kingdom of God” where Matthew used “kingdom of heaven” frequently in parallel accounts of the same parable.
Many Have Called it the Gospel of Salvation
Salvation for the individual, for those who believe, is a part of the bigger picture of the Kingdom of God.
For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek.
The Scriptures only once refers to the "gospel of your salvation" which is refering to God's word of truth.
In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,
Jesus's first offical spoken words at the beginning of his ministry
Matthew 4:17 (ESV)
From that time [after the temptation by Satan and moving to Capernaum in Galilee] Jesus began to preach, saying, “Repent, for the kingdom of heaven is at hand.” [These are the first recorded words of Jesus after officially beginning his ministry]
Jesus' first official word is repent. We can't become a part of the kingdom of heaven until we repent of all our sins. We can't remain in God's kingdom unless we continually repent of any additional sins which is the will of God for us (Matt 7:21-23) and to love God is to obey his commands (1 John 5:3).
Matthew 4:23-24 (NET)
Jesus went throughout all of Galilee, teaching in their synagogues, preaching the gospel of the kingdom, and healing all kinds of disease and sickness among the people.
Jesus's final recorded words in Revelation include his command for churches to repent
Jesus called for five out of the seven churches to repent (Rev 2-3). In every church there are those who are sincerely working to be faithful servants of God. In Revelation they are refered to as "overcomers" or one who "conquers". Jesus gave everyone in the all seven churches the opportunity to repent and overcome/conquer.
Rev 3:21 (ESV)
The one who conquers, I will grant him to sit with me on my throne, as I also conquered and sat down with my Father on his throne.
See also: Calling the Church to Repent
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Question: "What is the kingdom of God?"
Answer: The kingdom of God is referenced often in the gospels (e.g., Mark 1:15; 10:15; 15:43; Luke 17:20) and other places in the New Testament (e.g., Acts 28:31; Romans 14:17; 1 Corinthians 15:50). The kingdom of God is synonymous with the kingdom of heaven. The concept of the kingdom of God takes on various shades of meaning in different passages of Scripture.
Broadly speaking, the kingdom of God is the rule of an eternal, sovereign God over all the universe. Several passages of Scripture show that God is the undeniable Monarch of all creation: “The LORD has established his throne in heaven, and his kingdom rules over all” (Psalm 103:19). And, as King Nebuchadnezzar declared, “His kingdom is an eternal kingdom” (Daniel 4:3). Every authority that exists has been established by God (Romans 13:1). So, in one sense, the kingdom of God incorporates everything that is.
More narrowly, the kingdom of God is a spiritual rule over the hearts and lives of those who willingly submit to God’s authority. Those who defy God’s authority and refuse to submit to Him are not part of the kingdom of God; in contrast, those who acknowledge the lordship of Christ and gladly surrender to God’s rule in their hearts are part of the kingdom of God. In this sense, the kingdom of God is spiritual—Jesus said His kingdom was not of this world (John 18:36), and He preached that repentance is necessary to be a part of the kingdom of God (Matthew 4:17). That the kingdom of God can be equated with the sphere of salvation is evident in John 3:5–7, where Jesus says the kingdom of God must be entered into by being born again. See also 1 Corinthians 6:9.
There is another sense in which the kingdom of God is used in Scripture: the literal rule of Christ on the earth during the millennium. Daniel said that “the God of heaven will set up a kingdom that will never be destroyed” (Daniel 2:44; cf. 7:13–14), and many of the other prophets predicted the same thing (e.g., Obadiah 1:21; Habakkuk 2:14; Micah 4:2; Zechariah 14:9). Some theologians refer to the future, open manifestation of the kingdom of God as the “kingdom of glory” and the present, hidden manifestation of the kingdom of God as the “kingdom of grace.” But both manifestations are connected; Christ has set up His spiritual reign in the church on earth, and He will one day set up His physical reign in Jerusalem.
The kingdom of God has several aspects. The Lord is the Sovereign of the universe, and so in that sense His kingdom is universal (1 Timothy 6:15). At the same time, the kingdom of God involves repentance and the new birth, as God rules in the hearts of His children in this world in preparation for the next. The work begun on earth will find its consummation in heaven (see Philippians 1:6).
What is the Kingdom of God?, https://www.gotquestions.org/kingdom-of-God.html
Matthew 5:3 (ESV)
Blessed are the poor in spirit, for theirs is the kingdom of heaven.
Matthew 5:10 (ESV)
Blessed are those who are persecuted for righteousness' sake, for theirs is the kingdom of heaven.
Matthew 5:19=20 (ESV)
Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven. For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven.
Matthew 6:33 (ESV)
But seek first the kingdom of God and his righteousness, and all these things will be added to you.
Matthew 7:21 (ESV)
Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven.
Matthew 8:10-12 (NLT)
10 When Jesus heard this, he was amazed. Turning to those who were following him, he said, “I tell you the truth, I haven’t seen faith like this in all Israel! 11 And I tell you this, that many Gentiles will come from all over the world—from east and west—and sit down with Abraham, Isaac, and Jacob at the feast in the Kingdom of Heaven. 12 But many Israelites—those for whom the Kingdom was prepared—will be thrown into outer darkness, where there will be weeping and gnashing of teeth.”
And Jesus went throughout all the cities and villages, teaching in their synagogues and proclaiming the gospel of the kingdom and healing every disease and every affliction.
And proclaim as you go, saying, ‘The kingdom of heaven is at hand.’
11 Truly, I say to you, among those born of women there has arisen no one greater than John the Baptist. Yet the one who is least in the kingdom of heaven is greater than he. 12 From the days of John the Baptist until now the kingdom of heaven has suffered violence, and the violent take it by force.
But if it is by the Spirit of God that I cast out demons, then the kingdom of God has come upon you.
18 “Hear then the parable of the sower: 19 When anyone hears the word of the kingdom and does not understand it, the evil one comes and snatches away what has been sown in his heart. This is what was sown along the path. 20 As for what was sown on rocky ground, this is the one who hears the word and immediately receives it with joy, 21 yet he has no root in himself, but endures for a while, and when tribulation or persecution arises on account of the word, immediately he falls away. 22 As for what was sown among thorns, this is the one who hears the word, but the cares of the world and the deceitfulness of riches choke the word, and it proves unfruitful. 23 As for what was sown on good soil, this is the one who hears the word and understands it. He indeed bears fruit and yields, in one case a hundredfold, in another sixty, and in another thirty.”
24 He put another parable before them, saying, “The kingdom of heaven may be compared to a man who sowed good seed in his field, 25 but while his men were sleeping, his enemy came and sowed weeds among the wheat and went away. 26 So when the plants came up and bore grain, then the weeds appeared also. 27 And the servants of the master of the house came and said to him, ‘Master, did you not sow good seed in your field? How then does it have weeds?’ 28 He said to them, ‘An enemy has done this.’ So the servants said to him, ‘Then do you want us to go and gather them?’ 29 But he said, ‘No, lest in gathering the weeds you root up the wheat along with them. 30 Let both grow together until the harvest, and at harvest time I will tell the reapers, “Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.”’”
31 He put another parable before them, saying, “The kingdom of heaven is like a grain of mustard seed that a man took and sowed in his field. 32 It is the smallest of all seeds, but when it has grown it is larger than all the garden plants and becomes a tree, so that the birds of the air come and make nests in its branches.”
33 He told them another parable. “The kingdom of heaven is like leaven that a woman took and hid in three measures of flour, till it was all leavened.”
34 All these things Jesus said to the crowds in parables; indeed, he said nothing to them without a parable. 35 This was to fulfill what was spoken by the prophet:
“I will open my mouth in parables;
I will utter what has been hidden since the foundation of the world.”
36 Then he left the crowds and went into the house. And his disciples came to him, saying, “Explain to us the parable of the weeds of the field.” 37 He answered, “The one who sows the good seed is the Son of Man. 38 The field is the world, and the good seed is the sons of the kingdom. The weeds are the sons of the evil one, 39 and the enemy who sowed them is the devil. The harvest is the end of the age, and the reapers are angels. 40 Just as the weeds are gathered and burned with fire, so will it be at the end of the age. 41 The Son of Man will send his angels, and they will gather out of his kingdom all causes of sin and all law-breakers, 42 and throw them into the fiery furnace. In that place there will be weeping and gnashing of teeth. 43 Then the righteous will shine like the sun in the kingdom of their Father. He who has ears, let him hear.
44 “The kingdom of heaven is like treasure hidden in a field, which a man found and covered up. Then in his joy he goes and sells all that he has and buys that field.
45 “Again, the kingdom of heaven is like a merchant in search of fine pearls, 46 who, on finding one pearl of great value, went and sold all that he had and bought it.
47 “Again, the kingdom of heaven is like a net that was thrown into the sea and gathered fish of every kind. 48 When it was full, men drew it ashore and sat down and sorted the good into containers but threw away the bad. 49 So it will be at the end of the age. The angels will come out and separate the evil from the righteous 50 and throw them into the fiery furnace. In that place there will be weeping and gnashing of teeth.
51 “Have you understood all these things?” They said to him, “Yes.” 52 And he said to them, “Therefore every scribe who has been trained for the kingdom of heaven is like a master of a house, who brings out of his treasure what is new and what is old.”
I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.”
1 At that time the disciples came to Jesus, saying, “Who is the greatest in the kingdom of heaven?” 2 And calling to him a child, he put him in the midst of them 3 and said, “Truly, I say to you, unless you turn and become like children, you will never enter the kingdom of heaven. 4 Whoever humbles himself like this child is the greatest in the kingdom of heaven.
“Therefore the kingdom of heaven may be compared to a king who wished to settle accounts with his servants.
12 For there are eunuchs who have been so from birth, and there are eunuchs who have been made eunuchs by men, and there are eunuchs who have made themselves eunuchs for the sake of the kingdom of heaven. Let the one who is able to receive this receive it.” 13 Then children were brought to him that he might lay his hands on them and pray. The disciples rebuked the people, 14 but Jesus said, “Let the little children come to me and do not hinder them, for to such belongs the kingdom of heaven.”
23 And Jesus said to his disciples, “Truly, I say to you, only with difficulty will a rich person enter the kingdom of heaven. 24 Again I tell you, it is easier for a camel to go through the eye of a needle than for a rich person to enter the kingdom of God.”
Which of the two did the will of his father?” They said, “The first.” Jesus said to them, “Truly, I say to you, the tax collectors and the prostitutes go into the kingdom of God before you.
Therefore I tell you, the kingdom of God will be taken away from you and given to a people producing its fruits.
“The kingdom of heaven may be compared to a king who gave a wedding feast for his son, ....
13 “But woe to you, scribes and Pharisees, hypocrites! For you shut the kingdom of heaven in people's faces. For you neither enter yourselves nor allow those who would enter to go in. 14 And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.