So we must pay more careful attention to what we have heard. Then we will not drift away from it.
References for Hebrews 2:1
Even the message God spoke through angels had to be obeyed. Every time people broke the Law, they were punished. Every time they didn't obey, they were punished.
Then how will we escape if we don't pay attention to God's great salvation? The Lord first announced that salvation. Those who heard him gave us the message about it.
God gave witness to it through signs and wonders. He gave witness through different kinds of miracles. He also gave witness through the gifts of the Holy Spirit. He gave them out as it pleased him.