'Confidence' in the Bible

Such is the confidence and steadfast reliance and absolute trust that we have through Christ toward God.

Great is my confidence in you; great is my pride and boasting on your behalf. I am filled [to the brim] with comfort; I am overflowing with joy in spite of all our trouble.

I rejoice that in everything I have [perfect] confidence in you.

We have sent with them our brother, whom we have often tested and found to be diligent in many things, but who is now even more diligent [than ever] because of his great confidence in you.