9 and said to the men, I know that Jehovah has given you the land, and that the dread of you has fallen on us, and that all the inhabitants of the land faint because of you. 10 For we have heard that Jehovah dried up the waters of the Red sea before you when ye came out of Egypt; and what ye did to the two kings of the Amorites that were beyond the Jordan, to Sihon and to Og, whom ye utterly destroyed. 11 We heard [of it], and our heart melted, and there remained no more spirit in any man because of you; for Jehovah your God, he is God in the heavens above and on the earth beneath.
Matthew Henry's Commentary on Joshua 2:9-11
Commentary on Joshua 2:8-21
(Read Joshua 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, Psalm 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.