'Confirmation' in the Bible

This will be your confirmation that I have spoken the truth: This year you will eat what grows wild, and next year what grows on its own from that. But in the third year you will plant seed and harvest crops; you will plant vines and consume their produce.

"In those times many will oppose the king of the south. Those who are violent among your own people will rise up in confirmation of the vision, but they will falter.

For it is right for me to think this about all of you, because I have you in my heart, since both in my imprisonment and in the defense and confirmation of the gospel all of you became partners in God's grace together with me.

For people swear by something greater than themselves, and the oath serves as a confirmation to end all dispute.