Joshua 2:4 - Albert Barnes' Notes on the Bible

I wist not whence they were - Rahab acted as she did from the belief in God’s declared word, and conviction that resistance to His will would be both vain and wicked Joshua 2:9-11. Thus, she manifested a faith both sound and practical, and is praised accordingly Hebrews 11:31; James 2:25. The falsehood to which she had recourse may be excused by the pressure of circumstances and by her own antecedents, but cannot be defended.