Matthew 26:75
Then Peter remembered the words Jesus had said, "Before the rooster crows, you will deny [knowing] me three times." And he went out and cried bitterly.
2 Corinthians 2:7
So instead, you people should [now] forgive and comfort him, in order that such a person does not become overwhelmed with extreme grief.
Galatians 6:1
Brothers, if any one of you is overwhelmed by a [particular] sin, those of you who are spiritually minded should [attempt to] restore such a person [to faithfulness]. But do it in a gentle way, being very careful that you yourself do not become tempted [to get involved in any sin].
1 Peter 4:2-3
So then, you should no longer live the rest of your lives [to satisfy] the sinful desires of your body, but to do what God wants.