'Grace of the Lord' in the Bible

Then the king made answer and said to the man of God, Make a prayer now for the grace of the Lord your God, and for me, that my hand may be made well. And in answer to the prayer of the man of God, the king's hand was made well again, as it was before.

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.