Joshua 2:9-10

9and said to the men, “I know that the  Lord has given you the land, a  and that the fear of you has fallen upon us, and that all the inhabitants of the land b  melt away before you. 10For we have heard how the  Lord c  dried up the water of the Red Sea before you when you came out of Egypt, and d  what you did to the two kings of the Amorites who were beyond the Jordan, to e  Sihon and Og, whom you devoted to destruction.
That is, set apart ( devoted) as an offering to the Lord (for destruction)
Copyright information for ESV