Albert Barnes Commentary Joshua 2:4

"And the woman took the two men, and hid them; and she said, Yea, the men came unto me, but I knew not whence they were:" — Joshua 2:4 (ASV)

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.