Hebrews 2:3
2:3 how will we escape if we neglect such a great salvation? It was first communicated through the Lord and was confirmed to us by those who heard him,
Hebrews 6:9
6:9 But in your case, dear friends, even though we speak like this, we are convinced of better things relating to salvation.
Hebrews 13:18
13:18 Pray for us, for we are sure that we have a clear conscience and desire to conduct ourselves rightly in every respect.