Acts 21:21

"'But they have been informed about you that you teach all the Jews who are among the Gentiles to forsake Moses, saying that they ought not to cirumcise their children nor to walk according to their customs.'"

(This may not seem like a big deal now, since most reading this are probably Gentiles, but to not follow Jewish law after it had been preached to the Jews for over 1,400 years, was a huge deal. But the Gentiles can be saved without the Jewish law? Christ is above any man-made law, and has formed a new covenant with His people. But also: don't fall into a sense of entitlement. We are Gentiles, and God so graciously gave us the choice to enter His rest. Gentiles were heathen and nothing people: but God had such great compassion for the whole world, that He allowed the rest of the earth to be able to grasp at His glory. Remember this in humility.)