'Affirming' in the Bible

Then the king addressed Shimei, "You won't die!" affirming his promise with an oath.

David realized that the LORD was affirming him as king over Israel, and that his government was being exalted in order to benefit his people Israel.

They stayed there a considerable time and continued to speak boldly for the Lord, who kept affirming his word of grace and granting signs and wonders to be done by them.