JL: In my previous post, I mistakenly thought you were referring to the Centurion Cornelius, Acts 10:1-48, who was the first Gentile saved, coming into the Way, later called Christian.
The Centurion to which you are referring, Lk 7:1-10, was not saved but like the Canaanite lady received a blessing of healing, for one they cared for. Both received by faith, through Jesus Christ, not Israel as Israel itself was in need of faith, through Jesus Christ.
Acts 20:19 Serving the Lord with all humility of mind, and with many tears, and temptations, which befell me by the lying in wait of the Jews: 20 And how I kept back nothing that was profitable unto you, but have shewed you, and have taught you publicly, and from house to house, 21 Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.]KJV
[Acts 14:1 And it came to pass in Iconium, that they went both together into the synagogue of the Jews, and so spake, that a great multitude both of the Jews and also of the Greeks believed. 2 But the unbelieving Jews stirred up the Gentiles, and made their minds evil affected against the brethren.]KJV
Guojing: When God made Abraham and his descendants the focus of his blessings here is what was said in Genesis 22.
17 That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies;
18 And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.
Verse 18 is the key verse in understand how God related to Gentiles in the Old Testament, as well as the 4 Gospels.
JL: Yes all nations=Gentile and Jew blessed through Abraham's seed=Christ, not seeds as in many=Israel. All nations are blessed through Jesus Christ the seed of Abraham. Through Jesus, the seed of Abraham, Gentiles are Abraham's seed and equally heirs with the Jews to the promise=Kingdom of God=Davidic Kingdom.
Guojing: Gal 3 verse 8 is the key to understanding how God relates to Gentiles and 4 gospels. JL [Gal3:8 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.]KJV
The one and only gospel was first preached to Abraham.
[Gn22:16 And said, By myself have I sworn, saith the Lord, for because thou hast done this thing, and hast not withheld thy son, thine only son: 17 That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies;18 And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.]KJV
[Gal3:5 He therefore that ministereth to you the Spirit, and worketh miracles among you, doeth he it by the works of the law, or by the hearing of faith? 6 Even as Abraham believed God, and it was accounted to him for righteousness. 7 Know ye therefore that they which are of faith, the same are the children of Abraham. 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. 9 So then they which be of faith are blessed with faithful Abraham. 10 For as many as are of the works of the law are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the book of the law to do them. 11 But that no man is justified by the law in the sight of God, it is evident: for, The just shall live by faith. 12 And the law is not of faith: but, The man that doeth them shall live in them. 13 Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree: 14 That the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith. 15 Brethren, I speak after the manner of men; Though it be but a man's covenant, yet if it be confirmed, no man disannulleth, or addeth thereto. 16 Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ. 17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect. 18 For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise. 19 Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator.]KJV
[Gal2:20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me. 21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.]KJV