John 10:28-30
And I give them eternal life, and they shall never perish, neither shall any pluck them out of my hand.
John 21:17
He saith to him, Yea, Lord, thou knowest that I love thee. He saith to him, Feed my sheep. He saith to him the third time, Simon, son of Jonah, 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. Jesus saith to him, Feed my sheep.
2 Corinthians 1:12
For this is our rejoicing, the testimony of our conscience, that in simplicity and godly sincerity, not with carnal wisdom, but by the grace of God, we have had our conversation in the world, and more especially toward you.
1 Thessalonians 2:10
Ye are witnesses and God, how holily and justly and unblameably we behaved among you that believe: