'Confirmation' in the Bible

Also take these 10 portions of cheese to the field commander. Check on the welfare of your brothers and bring a confirmation from them.

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.

Further, he made all who were present in Jerusalem and Benjamin stand [with him, in confirmation of it]. So the inhabitants of Jerusalem acted in accordance with the covenant of God, the God of their fathers.

They have seen falsehood and lying divination, saying, ‘The Lord says,’ but the Lord has not sent them. Yet they hope and make men to hope for the confirmation of their word.

"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.