Notice He didn’t say that now they will proclaim the laws of Moses or the Torah or become better Jews. No, He said that the gospel goes to all nations, all peoples now.
Which if you bothered to read the Torah, you'd know that teaching all nations about YHWH was a commandment all the way back then, too. People act like the gospel was this "new thing", when really, it goes all the way back to the Garden. "Have faith in YHWH, trust and obey Him, and be saved" is the theme of the entire Scriptures, not just the NT.