'Faith' in the Bible

Nebuchadnezzar made answer and said, Praise be to the God of Shadrach, Meshach, and Abed-nego, who has sent his angel and kept his servants safe who had faith in him, and who put the king's word on one side and gave up their bodies to the fire, so that they might not be servants or worshippers of any other god but their God.

Then the king was very glad, and gave orders for them to take Daniel up out of the hole. So Daniel was taken up out of the hole and he was seen to be untouched, because he had faith in his God.