'By Faith' in the Bible

[So], you see, it is by deeds that a person is made right with God, and not by faith alone.

And if their prayer is [offered] by faith, [God] will heal the one who is sick, and the Lord will raise him up [from his sickbed]. And if he had sinned, he will be forgiven for them [Note: This may imply that the man's sickness was the result of some sin. In any event, his forgiveness would follow his repentance].