Romans 15:8-12 - Yeshua's Ministry to the Jews

At this point Paul began to discuss the two reasons why Yeshua came as a minister to the Jews.

Romans 15:8-12 (KJV)
⁸ Now I say that Jesus Christ was a minister of the circumcision for the truth of God, to confirm the promises made unto the fathers:
⁹ And that the Gentiles might glorify God for his mercy; as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name.
¹⁰ And again he saith, Rejoice, ye Gentiles, with his people.
¹¹ And again, Praise the Lord, all ye Gentiles; and laud him, all ye people.
¹² And again, Esaias saith, There shall be a root of Jesse, and he that shall rise to reign over the Gentiles; in him shall the Gentiles trust.

Messiah Yeshua ministered to the Jews (the circumcision) on behalf of the truth of God, to confirm the promises that had been made to the patriarchs, Abraham, Isaac, and Jacob (verse 8).

Genesis 12:1-2 (KJV)
¹ Now the LORD had said unto Abram, Get thee out of thy country, and from thy kindred, and from thy father's house, unto a land that I will shew thee:
² And I will make of thee a great nation, and I will bless thee, and make thy name great; and thou shalt be a blessing:

Yeshua, Himself, spoke plainly that He had come to minister to the Jews.

Matthew 15:24 (KJV)
²⁴ But he answered and said, I am not sent but unto the lost sheep of the house of Israel.

However, Yeshua had not come only for the confirmation to the Jews that God would fulfill His promises, but He also came so that the Gentiles might glorify God for His mercy (verses 9-11). Paul then quoted from the Old Testament.

2 Samuel 22:50 (KJV)
⁵⁰ Therefore I will give thanks unto thee, O LORD, among the heathen, and I will sing praises unto thy name.

Deuteronomy 32:43 (KJV)
⁴³ Rejoice, O ye nations, with his people: for he will avenge the blood of his servants, and will render vengeance to his adversaries, and will be merciful unto his land, and to his people.

Psalm 117:1 (KJV)
¹ O praise the LORD, all ye nations: praise him, all ye people.

Then Paul quoted from Isaiah regarding the inclusion of Gentiles into the Kingdom of God (verse 12).

Isaiah 11:10 (KJV)
¹⁰ And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek: and his rest shall be glorious.

The root of Jesse is Messiah Yeshua, who descended from David, the son of Jesse. The Gentiles would also be under the kingship of Messiah and they would trust in Him.

God's people are collectively called Israel, but throughout history, those who believed in Messiah, whether Jew or Gentile, were allowed entrance into that body. Although both Jews and Gentiles can belong, there is only one body, one Messiah, and one Law (instruction) for all.