Hebrews 2:2-3

2The message that God spoke by angels was certainly powerful. God punished people when they did not obey the Law that he gave to Moses. In a completely right way he punished people who did anything wrong.

3As for us, God has shown us the way that he will save us from our sins. So we must not forget God's message about his great way to save us. If we do, he will certainly punish us. The Lord Jesus himself first spoke that message about how God would save people. Then the people who heard Jesus told the message to us. That is how we know that it is true.