Matthew 16:18

And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it.

The Messiah promised to build His Church using a Jewish fisherman named Peter. He did so. All the first believers in Jesus the Messiah were Jews. First 300 years later, paganism came into the true Messianic faith. It came through Rome, that quickly enforced Sunday as the Sabbath, deleted the 2nd commandment, and allowed production, adoration and veneration of idols. Jesus promised us that there will always be true Messianic followers on Earth.