Not to go to the Gentiles yet.
Matthew 6:31,32; 10:5,18; 15:24; 24:13,14.

Acts 13:46; 18:6; 26:16-18,20; 28:28

Ephesians 3:1,6-9

Romans 1:16 - For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.

Romans 3:29 - Is he the God of the Jews only? is he not also of the Gentiles? Yes, of the Gentiles also:

Romans 11:11 - I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy.

Romans 11:13 - For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify mine office:

I Corinthians 12:13 - For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.

Galatians 2:7,8 -  But contrariwise, when they saw that the gospel of the uncircumcision was committed unto me, as the gospel of the circumcision was unto Peter; (For he that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles:)

Colossians 1:27 - To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory:

I Timothy 2:7 - Whereunto I am ordained a preacher, and an apostle, (I speak the truth in Christ, and lie not;) a teacher of the Gentiles in faith and verity.

II Timothy 1:11 - Whereunto I am appointed a preacher, and an apostle, and a teacher of the Gentiles.

II Timothy 4:17 - Notwithstanding the Lord stood with me, and strengthened me; that by me the preaching might be fully known, and that all the Gentiles might hear: and I was delivered out of the mouth of the lion.

They were forbidden by Jews and hindered by Satan to reach to the Gentiles.
I Thessalonians 2:14-18 - For ye, brethren, became followers of the churches of God which in Judaea are in Christ Jesus: for ye also have suffered like things of your own countrymen, even as they have of the Jews: Who both killed the Lord Jesus, and their own prophets, and have persecuted us; and they please not God, and are contrary to all men: Forbidding us to speak to the Gentiles that they might be saved, to fill up their sins alway: for the wrath is come upon them to the uttermost.  But we, brethren, being taken from you for a short time in presence, not in heart, endeavoured the more abundantly to see your face with great desire. Wherefore we would have come unto you, even I Paul, once and again; but Satan hindered us.