2:12 By the Lord - By your God who is the only true God: so she owns his worship, one eminent act whereof is swearing by his name. My father's house - My near kindred, which she particularly names, Jos 2:13, husband and children it seems she had none. And for herself, it was needless to speak, it being a plain and undeniable duty to save their preserver. True token - Either an assurance that you will preserve me and mine from the common ruin: or a token which I may produce as a witness of this agreement, and a means of my security. This is all that she asks. But God did for her more than she could ask or think. She was afterwards advanced to be a princess in Israel, the wife of Salmon and one of the ancestors of Christ.
2:8-21 Rahab had heard of the miracles the Lord wrought for Israel. She believed that his promises would certainly be fulfilled, and his threatenings take effect; and that there was no way of escape but by submitting to him, and joining with his people. The conduct of Rahab proved that she had the real principle of Divine faith. Observe the promises the spies made to her. The goodness of God is often expressed by his kindness and truth, Ps 117:2; in both these we must be followers of him. Those who will be conscientious in keeping promises, are cautious in making them. The spies make needful conditions. The scarlet cord, like the blood upon the doorpost at the passover, recalls to remembrance the sinner's security under the atoning blood of Christ; and that we are to flee thereto for refuge from the wrath of a justly offended God. The same cord Rahab used for the saving of these Israelites, was to be used for her own safety. What we serve and honour God with, we may expect he will bless, and make useful to us.
