'Act' in the Bible

Did Hezekiah and all Judah put him to death? did he not in the fear of the Lord make prayer for the grace of the Lord, and the Lord let himself be turned from the decision he had made against them for evil? By this act we might do great evil against ourselves.

Great in wisdom and strong in act: whose eyes are open on all the ways of the sons of men, giving to everyone the reward of his ways and the fruit of his doings: