John 10:28-30
and I give them eternal life, and they shall never perish nor shall any one pluck them out of my hand.
John 21:17
He said to him a third time; Simon, son of John, are you a friend to me? Peter was grieved that he said to him the third time, Are you a friend to me? and he said to him, Lord you know all things; you know that I am a friend to you. Jesus said to him, Feed my sheep.
2 Corinthians 1:12
For this is our rejoicing; the testimony of our conscience that in purity and godly sincerity, not with a carnal wisdom, but with a divine grace, we have conducted ourselves in the world, and most abundantly towards you.
1 Thessalonians 2:10
You are witnesses, and God, how piously, and righteously, and blamelessly we were with you that believe,