OT Gospel of the Kingdom - NT Gospel of the grace of God

Ephesians 3:4-5
By referring to this, when you read you can understand my insight into the mystery of Christ, which in other generations was not made known to mankind, as it has now been revealed to His holy apostles and prophets in the Spirit.

Paul states the gospel of Jesus Christ was unknown to previous generations.

That is how we know that Abraham only had the future promise of the messiah.

His birth was under the Law but began his earthly ministry under Grace. He preached grace for he was the author of it. His mission was not “only” to the house of Israel. He mingled with the Samaritans, the Canaanite, and as to fulfill the prophecy of Isaiah that in his name shall the Gentiles trust. ( Matthew 12:17-21). His mission was not only for the Jews but also the Gentiles as well for he was the Saviour of the world
John 1:17 “For the Law was given by Moses but grace and truth by Jesus Christ.”
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Luke 19:10 “For the Son of man is come to seek and to save that which was lost.”
John 3:17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John 4:42 And said unto the woman, Now we believe, not because of thy saying: for we have heard him ourselves, and know that this is indeed the Christ, the Saviour of the world.
1 John 4:14 And we have seen and do testify that the Father sent the Son to be the Saviour of the world.

I tend to think that in Galatians 3:8, the word gospel is meant to convey it's common meaning of "glad/good tidings" and not so much the more complete meaning that is presented in the NT.

In both instances, it was indeed the gospel of the Kingdom of God/Heaven...

Gen. 12:3 - I will bless those who bless you, and him who dishonors you I will curse, and in you all the families of the earth shall be blessed.

Gal. 3:8-9 - 8The Scripture foresaw that God would justify the Gentiles by faith, and foretold the gospel to Abraham: “All nations will be blessed through you.” 9So those who have faith are blessed along with Abraham, the man of faith.

Paul clarifies this in Gal. 3:14 - 14He redeemed us in order that the blessing promised to Abraham would come to the Gentiles in Christ Jesus, so that by faith we might receive the promise of the Spirit.

We disagree:

Matt 15:24 Messiah answered & said, I am not sent but unto the lost sheep of the house of Israel.
(SCRIPTURE PROCLAIMS: Jesus say's He was sent, ONLY, to the lost sheep of the "House of Israel")

Rom 15:8 I say that Messiah was a minister of the circumcision for the truth of God, to confirm the promises made unto the fathers:
(SCRIPTURE PROCLAIMS: Jesus was sent to minister to the circumcision/JEWS. To fulfil OT promises made to the ISRAEL'S fathers)

Gal 4:4
4 But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,
(MY NOTE: God sent forth his Son, made of a woman, MADE UNDER the LAW!)

5 To redeem them that were under the law, that we might receive the adoption of sons.
(MY NOTE: To REDEEM Who? Well, only Israel/Jews were under the law.)

Jesus in the flesh mission is to ISRAEL ONLY! Reread Rom 15:8 above: To fulfill the promises made to Israel's fathers.

Heb 9:
14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?

15 And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
(MY NOTE: By the MEANS of DEATH! He becomes the MEDIATOR of the NEW COVENANT! And the REDEEMER of TRANSGRESSIONS)

16 For where a testament is, there must also of necessity be the death of the testator.
(MY NOTE: NO DEATH, NO NEW TESTAMENT/COVENANT!)

The RISEN Lord Jesus chooses Paul (Acts 26:14-18, 1 Tim 2:7) And sends him to minister to the Gentiles (Acts 26:14-18). Paul received via direct revelation from Jesus (Gal 1:12). Christ' gospel of the GRACE of God (Acts 20:24) message.

The old covenant Mosaic LAW dispensation (That Jesus taught & kept) required SELF-WORKS (Deut 28) in order to access God's blessings.

The new covenant gospel of the GRACE of God dispensation requires FAILH ALONE to access God/Christ's blessings.

Eph 3:2 Paul said; have ye heard of the dispensation of the grace of God which is given me to give to you:

Abraham was the first to receive the Gospel. There is but one Gospel, and it truly is the Good News. There can not be another Gospel other than the one received by Abraham. I understand this but it is not a product of my understanding.

Gal 3:8 And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.
Gal 3:9 So then they which be of faith are blessed with faithful Abraham.

Jesus Yeshua has taught us all that plainly all who believe are of the faith of Abraham. Because He said it, I believe it, and this the faith of Abraham is truly, from our Lord, the only denomination that is true. Anything named since is truly false.

When I was first given to believe Jesus Yeshua, I would travel to the Rocky Mountains, and live in the forests while reading the Word, cover to cover. I read the Word several times there, and I shared It with any and all whom I would encounter.

There were miracles which seemed quite normal to me due to the Presence of the Holy Spirit. One night I was given a lesson in the Holy Spirit. The Voice said, "Now, the Children of Israel, while they were in the wilderness, were disobedient, and by their disobedience salvation was gained by the nations."

Although I had read this particular teaching in the Word, it came home to my heart when hearing it. Israel was used to show all need the salvation of Jesus Yeshua, all. It is a wonderful understanding gift, and I cannot get over having been taught Directly. Praise Yah, He is worthy, not we.

This dilemma for so many should not be so. It should be crystal clear, but having ears they do not hear, and having eyes they do not see.

Hmmmm, things aren’t adding up. Paul states that the gospel he preached has gone out to all the world, been preached to every creature under heaven, and has been made known to all nations.

Colossians 1
5 For the hope which is laid up for you in heaven, whereof ye heard before in the word of the truth of the gospel;
6 Which is come unto you, as it is in all the world; and bringeth forth fruit, as it doth also in you, since the day ye heard of it, and knew the grace of God in truth:

23 If ye continue in the faith grounded and settled, and be not moved away from the hope of the gospel, which ye have heard, and which was preached to every creature which is under heaven; whereof I Paul am made a minister;

Romans 16
25 Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,
26 But now is made manifest, and by the scriptures of the prophets, according to the commandment of the everlasting God, made known to all nations for the obedience of faith:

There is one Gospel (Galatians 1:6-9), so the Gospel of the Kingdom is the same as the Gospel of grace.

The Kingdom of God is composed of citizens who are children of Abraham and inheritors of the promise through faith.

In Matthew 4:15-23, Jesus began his ministry with the Gospel message to repent for the Kingdom of God is at hand, which as a light to the Gentiles, and God's law was how his audience knew what sin is (Romans 3:20), so repenting from our disobedience to it is a central part of the Gospel of the Kingdom, which is in accordance with Jesus being sent in fulfillment of the promise to bless us by turning us from our wickedness (Acts 3:25-26), which is the Gospel of the Kingdom that was made known in advance to Abraham in accordance with the promise (Galatians 3:8), which he taught to Gentiles in Haran in accordance with the promise (Genesis 12:1-5).

In Genesis 18:19, God knew Abraham that he would teach his children and those of his household to walk in His way by doing righteousness and justice that the Lord may bring to him all that He has promised. In Genesis 25:4-5, God will multiply Abraham's children as the stars in the heaven, to his children He will give all of these lands, and through his children all of the nations of the earth will be blessed because he heard God's voice and guarded His charge, commandments, statutes, and laws. In Deuteronomy 30:16, if the children of Abraham will love God with all of their heart by walking in God's way in obedience to His statutes, commandments, and laws, then they will live and multiply and God will bless the in the land that they go to possess, so the promise was made to Abraham and brought about because he walked in God's way in obedience to His law, he taught his children and those of his household to do that, and because they did that.

In Psalms 119:1-3, God's law is how the children of Abraham knew how to be blessed by walking in His way, and in John 8:39, Jesus said that if they were children of Abraham, then they would be doing the same works as him, so the way that the children of Abraham are multiplied and are a blessing to the nations in accordance with inheriting the promise through faith is through spreading the Gospel of the Kingdom by turning the nations from their wickedness and teaching them to do that same works as Abraham by walking in God's way in obedience to His law.

In Psalms 119:29, he wanted to put false ways far from him, for God to be gracious to him by teaching him to obey His law, and he chose the way of faithfulness by setting it before him, so this has always been the one and only way of salvation by grace through faith. In Exodus 33:13, Moses wanted God to be gracious to him by teaching him to walk in His way that he might know Him and Israel too, and in John 17:3, eternal life is knowing God and Jesus, so this is also the Gospel of grace.

In Matthew 24:12-14, Jesus prophesied that the Gospel of the Kingdom would be proclaimed to all nations, and in Matthew 28:16-20, he commissioned his disciples to bring the Gospel to all nations teaching everything that he taught them, so while Jesus taught the Gospel to the Jews first, this was so Jews would be equipped for the role of being a light and a blessing to the nations by spreading it to them.

Jesus did not establish the New Covenant for the purpose of negating anything that he spent his ministry teaching, but rather the New Covenant still involves following the Mosaic Law in accordance with the Gospel of the Kingdom (Jeremiah 31:33).

In Ephesians 2:12-19, through faith in Christ, Gentiles are no longer strangers to the covenants of promise or aliens, but are fellow citizens of Israel along with the saints in the household of God, which is all in accordance with the Gospel of the Kingdom.

The NT Gospel of grace does not make void the Mosaic Law, but rather it involves God being gracious to us by teaching us to obey it. In Titus 2:11-13, our salvation is described as being trained by grace to do what is godly, righteous, an good, and to renounce doing what is ungodly, so God graciously teaching us to obey the Mosaic Law is the content of His gift of salvation. Furthermore, in Titus 2:14, Jesus gave himself to redeem us from all lawlessness and to purify for himself a people of his own possession who are zealous for doing good works, so the way to believe in 1 Corinthians 15:1-4 is by becoming zealous for doing good works in obedience to the Mosaic Law (Acts 21:20). Furthermore, in Ezekiel 36:26-27, the Spirit has the role of leading us to obey the Mosaic Law under the New Covenant.

If there could be a true name for the denomination of believers of Jesus Yeshua, it would be the Faith of Abraham. I get this from our Savior.

We may also be called true Jews, not that assembly of Satan. Following the word back, I have obtained this understanding from Leah.

None of the above is written in stone doctrine, but it is from the Word via the Holy Spirit, Ruach Chodesh..