Mark 14:69
And there the maidservant, on seeing him, began to say again to the by-standers: "This is one of them!"
Mark 14:38
Watch and pray," he said to them all, "that you may not fall into temptation. True, the spirit is eager, but human nature is weak."
Luke 22:58
A little while afterwards some one else--a man--saw him and said: "Why, you are one of them!" "No," Peter said, "I am not."
John 18:17
So the maidservant said to Peter: "Are not you also one of this man's disciples?" "No, I am not," he said.
John 18:25
Meanwhile Simon Peter was standing there, warming himself; so they said to him: "Are not you also one of his disciples?" Peter denied it. "No, I am not," he said.
Galatians 6:1
Brothers, even if a man should be caught committing a sin, you who are spiritually minded should, in a gentle spirit, help him to recover himself, taking care lest any one of you also should be tempted.