Hi Gabriel,
Paul first went to the Jews with the Word of God, but because they wouldn't listen He then focused on the Gentiles only.
Act 13:46 Then Paul and Barnabas waxed bold, and said, It was necessary that the word of God should first have been spoken to you:
but seeing ye put it from you, and judge yourselves unworthy of everlasting life, lo, we turn to the Gentiles.
Act 18:5 And when Silas and Timotheus were come from Macedonia, Paul was pressed in the spirit, and testified to the Jews that Jesus was Christ.
Act 18:6 And when they opposed themselves, and blasphemed, he shook his raiment, and said unto them, Your blood be upon your own heads; I am clean:
from henceforth I will go unto the Gentiles.
Here we see where Jesus commissioned Paul for the Gentiles only.
Act 26:15 And I said, Who art thou, Lord? And he said, I am Jesus whom thou persecutest.
Act 26:16 But rise, and stand upon thy feet: for I have appeared unto thee for this purpose, to make thee a minister and a witness both of these things which thou hast seen, and of those things in the which I will appear unto thee;
Act 26:17 Delivering thee from the people, and from the Gentiles,
unto whom now I send thee,
Act 26:18 To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.
Act 26:19 Whereupon, O king Agrippa, I was not disobedient unto the heavenly vision:
Act 26:20 But shewed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Judaea, and then to the Gentiles, that they should repent and turn to God, and do works meet for repentance.
Rom 15:16
That I should be the minister of Jesus Christ to the Gentiles, ministering the gospel of God, that the offering up of the Gentiles might be acceptable, being sanctified by the Holy Ghost.
G.Driggs
p.s. I was reading the same verses you asked about only an hour ago, so I just had to reply
