Luke 17:3
Take heed to yourselves. If your brother sins, check him, and if he repents forgive him.
Matthew 18:21
Then Peter came up and said to him, "Lord, how often is my brother to sin against me and be forgiven? Up to seven times?"
Matthew 18:15-17
If your brother sins [against you], go and reprove him, as between you and him alone. If he listens to you, then you have won your brother over;
Luke 21:34
Take heed to yourselves in case your hearts get overpowered by dissipation and drunkenness and worldly anxieties, and so that Day catches you suddenly like a trap.
Galatians 2:11-14
But when Cephas came to Antioch, I opposed him to his face. The man stood self-condemned.
Ephesians 5:15
Be strictly careful then about the life you lead; act like sensible men, not like thoughtless;
Hebrews 12:15
see to it that no one misses the grace of God, that no root of bitterness grows up to be a trouble by contaminating all the rest of you;
James 5:19
My brothers, if anyone of you goes astray from the truth and someone brings him back,
2 John 1:8
Watch yourselves; you must not lose what you have been working for, but gain a full reward.