Exodus 17:6 - Exposition

Behold, I will stand before thee there. A visible Divine appearance seems to be intended, which would guide Moses to the exact place where he should strike. The rock in Horeb must have been a remarkable object, already known to Moses during the time that he dwelt in the Sinai-Horeb region; but its exact locality cannot be pointed out. It cannot, however, have been very far distant from Rephidim. (See Exodus 17:8 .)