John 10:28-30
and I give them everlasting life; and they shall never perish, nor shall any one tear them out of my hand.
John 21:17
He saith to him the third time, Simon, son of John, lovest thou me? Peter was grieved because he said to him the third time, Lovest thou me? And he said to him, Lord, thou knowest all things; thou knowest that I love thee. He saith to him, Feed my sheep.
2 Corinthians 1:12
For our glorying is this, the testimony of our conscience, that in simplicity and the sincerity which is of God, not in fleshly wisdom, but in the grace of God, we have conducted ourselves in the world, and especially toward you.
1 Thessalonians 2:10
Ye are witnesses, and so is God, how holily, and righteously, and unblamably we conducted ourselves toward you that believe;