1. We must give our full attention to what we were told, so that we won't drift away.
2. The message spoken by angels proved to be true, and all who disobeyed or rejected it were punished as they deserved.
3. So if we refuse this great way of being saved, how can we hope to escape? The Lord himself was the first to tell about it, and people who heard the message proved to us that it was true.