Hebrews 2:11

2:11 For indeed he who makes holy and those being made holy all have the same origin, and so he is not ashamed to call them brothers and sisters,

Hebrews 6:16

6:16 For people swear by something greater than themselves, and the oath serves as a confirmation to end all dispute.

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.