Well, all of the text matters. Everything he said, including when He said go to the gentiles. We must accept everything. After the cross, literally after that event, in Matthew chapter 28 He tells his disciples to then go to the nations and teach them.
Ok last one...
If we logically flipped the last passage from its negative isn't it then also true that:
"at THIS time ye [gentiles] are with Christ, being within the commonwealth of Israel, and participants of the covenants of promise, having hope, and with God in the world"?
The new covenant promise was only given to Israel & Judah (Jer 31:31-33), and once the Almighty says something His Word must accomplish what was said (Isaiah 55:11). So there was/is no way to just give that promise to gentiles unless gentiles are grafted into the commonwealth, otherwise the Almighty would be breaking His Word.
Acts 2
¶And when the day of Pentecost was fully come, they were all with one accord in one place
5¶And there were dwelling at Jerusalem Jews, devout men, out of
every nation under heaven .
9Parthians, and Medes, and Elamites, and the dwellers in Mesopotamia, and in Judaea, and Cappadocia, in Pontus, and Asia,
10Phrygia, and Pamphylia, in Egypt, and in the parts of Libya about Cyrene, and strangers of Rome, Jews and proselytes,
11Cretes and Arabians, we do hear them speak in our tongues the wonderful works of God.
39For the promise is unto you, and to your children, and to all that are afar off,
even as many as the Lord our God shall call.
Jews , Jews ,Jews and Jews .
Unless you believe the apostles are acting out of disobedience we can conclude they are following Jesus s instructions to NOT go the the gentiles.
Acts 11
19¶Now they which were scattered abroad upon the persecution that arose about Stephen travelled as far as Phenice, and Cyprus, and Antioch, preaching the word to NONE but unto
the Jews only .
UNTIL THE GENTILES ARE GRANTED REPENTENCE. which is approx 10 years after acts 2 .
Acts11
18¶When they heard these things, they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life.