There was a time non-Jews weren’t welcome with the gospel. But all of that changed when the Lord decided to allow other people into His Kingdom. The story of the vision of Peter is truth of that fact. Look at Acts 10.9-16. “ The next day, as they went on their journey and drew near the city, Peter went up on the housetop to pray, about [a]the sixth hour and he became very hungry and wanted to eat; but while they made ready, he fell into a trance and saw heaven opened and an object like a great sheet bound at the four corners, descending to him and let down to the earth. In it were all kinds of four-footed animals of the earth, wild beasts, creeping things, and birds of the air. And a voice came to him, “Rise, Peter; kill and eat.” Peter said, “Not so, Lord! For I have never eaten anything common or unclean.” And the voice spoke to him again the second time, “What God has [b]cleansed you must not call common.” This was done three times. And the object was taken up into heaven again.
The vision was God informing Jews that a change was on the way. When God authorizes change, no man can reject it. That is why Peter asked in Acts 10.48, is there anyone who could reject the baptism of Cornelius, because he wasn’t Jewish. The answer is none, God was accepting them. God accepts any who conform to His word. Act 10.34-35.