V.1-11 How much like ourselves were these Old Testament people! Joshua’s faith is not strong, so he sends spies instead of just going ahead on the sure Word of Jehovah (Joshua 1:1-6). Rahab, an immoral woman turns to Jehovah by faith — but isn’t truthful with her neighbors.
V.12-21 While Rahab was not as upright as she should have been, it was her personal faith in God which made her willing to forsake her people and turn to help Israel.
V.21 Shows that she immediately put out the “token” or sign as to whose side she and her household were on. How about us and our homes, is it plain whose side we are on?
V.22-24 It was Israel’s weakness of faith that led to the sending of the spies. It was Jehovah’s wonderful grace which gave the spies the evidence they looked for, to encourage them. Rahab, for her faith in God, later came in to the family of Israel, married Salmon, and became one in the royal line, into which Jesus was born, much later (Matt. 1:5). She is also mentioned in Hebrews 11:31 and James 2:25, neither of which hides what she was before, but mentions her faith and works.