This Gospel of the Kingdom was prophesied by Isaiah:
Isaiah 52:3-7 For thus saith the Lord, Ye have been sold for nought; and ye shall not be ransomed with silver.[4] Thus saith the Lord, My people went down before to Egypt to sojourn there; and were carried away forcibly to the Assyrians.[5] And now why are ye here? Thus saith the Lord, Because My people was taken for nothing, wonder ye and howl. Thus saith the Lord, On account of you My name is continually blasphemed among the Gentiles.[6] Therefore shall My people know My name in that day, for I am He that speaks: I am present,[7] as a season of beauty upon the mountains, as the feet of one preaching glad tidings of peace, as one preaching good news: for I will publish thy salvation, saying, O Sion, thy God shall reign.
And fulfilled by Ιησους:
Matthew 10:5-7 These Twelve Ιησους sent forth and commanded them, saying, Go not into the way of the Gentiles, and into city of the Samaritans enter ye not: But go rather to the Lost Sheep of the House of Israel. And as ye go, preach, saying, The Kingdom of Heaven is at hand.
John 12:44-50 [49] For I have not spoken from Myself: but the Father which sent Me He gave Me a Commandment, what I should say and what I should speak.[50] And I know that His Commandment is Life Everlasting: whatsoever I speak therefore, even as the Father said unto Me, so I speak.KJV
Deuteronomy 18:18-19 I will raise up to them a prophet of their brethren like thee, and I will put My words in His mouth, and He shall speak to them as I shall Command Him. 19 And whatever man shall not hearken to whatsoever words that prophet shall speak in My name, I will take vengeance on him.LXX
Matthew 4:13-23 And Ιησους went about all Galilee, teaching in their synagogues, and preaching the Gospel of the Kingdom, and healing all manner of sickness and all manner of disease among the people.
And Again:
Isaiah 61:1-3 The Spirit of the Lord is upon Me because He has anointed Me.
He has sent Me to preach glad tidings to the poor (1),
to heal the broken in heart, to proclaim liberty to the captives (2)
and recovery of sight to the blind (3),
[2] to declare the acceptable year of the Lord (4)
and the day of recompence; to comfort all that mourn (5);LXX
Matthew 11:5 The blind receive their sight and the lame walk, the lepers are cleansed and the deaf hear, the dead are raised up and the poor have the Gospel preached to them.(1)
Matthew 4:12-17 The people which sat in darkness saw great light, and to them which sat in the region and shadow of death light is sprung up.(2)
[17] From that time Iesus began to preach, and to say, Repent: for the Kingdom of Heaven is at hand.(4)
John 9:39-41 And Ιησους said, For judgment I am come into this world, that they which see not might see; and that they which see might be made blind.(3)
Matthew 5:1-4 (Disciples) Blessed are they that mourn: for they shall be comforted.(5)
Matthew 9:35 And Ιησους went about all the cities and villages, teaching in their synagogues, and preaching the Gospel of the Kingdom, and healing every sickness and every disease among the people.
Matthew 24:14 And this Gospel of the Kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
Matthew 26:13 Verily I say unto you, Wheresoever this Gospel shall be preached in all the world, there shall also this, that this woman hath done, be told for a memorial of her.
And Again
Jeremiah 3:7-12 ...And faithless Juda saw her faithlessness.[8] And I saw that (for all the sins of which she was convicted, wherein the House of Israel committed adultery, and I put her away, and gave into her hands a bill of divorcement,) yet faithless Juda feared not, but went and herself also committed fornication.[9] And her fornication was nothing accounted of; and she committed adultery with wood and stone.[10] And for all these things faithless Juda turned not to Me with all her heart, but falsely.
[11] And the Lord said to me, Israel has justified himself more than faithless Juda.[12] Go and read these words toward the north, and thou shalt say, Return to Me, O House of Israel, saith the Lord; and I will not set My face against you: for I am merciful, saith the Lord, and I will not be angry with you for ever.
Hosea 1:6-7 And she conceived again, and bore a daughter. And he said to him, Call her name, Unpitied: for I will no more have mercy on the House of Israel, but will surely set myself in array against them.
Hosea 2:1-23 And I will sow her to Me on the Earth, and will love her that was not loved: and will say to that which was not My people, Thou art My people; and they shall say, Thou art the Lord My God."LXX
Jeremiah 31:18-20 I have heard the sound of Ephraim lamenting, and saying, Thou hast chastened me, and I was chastened. I, as a calf was not willingly taught: turn Thou me and I shall turn, for Thou art the Lord My God.[19] For after my captivity I repented, and after I knew I groaned for the day of shame, and shewed Thee that I bore reproach from my youth.[20] Ephraim is a beloved son, a pleasing child to me: for because My words are in him, I will surely remember him: therefore I made haste to help him; I will surely have mercy upon him, saith the Lord.LXX
1 Peter 2:9-10 But ye [are] a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of Him who hath called you out of darkness into His marvellous light:[10] Which in time past [were] not a people, but [are] now the people of God: which had not obtained mercy, but now have obtained mercy. (1 Peter 1, House of Israel)
Matthew 4:12-17 Now when Ιησους had heard that John was cast into prison He departed into Galilee.[13] And leaving Nazareth, He came and dwelt in Capernaum, which is upon the sea coast, in the borders of Zabulon and Nephthalim:[14] That it might be fulfilled which was spoken by Esaias the prophet, saying:[15] The land of Zabulon and the land of Nephthalim, by the way of the sea beyond Jordan, Galilee of the ἐθνῶν:[16] The people which sat in darkness saw great light, and to them which sat in the region and shadow of death light is sprung up.[17] From that time Ιησους began to preach and to say: Repent, for the Kingdom of Heaven is at hand.
The Gospel of the Kingdom of Heaven for the Lost Sheep of the House of Israel