Certainly I will be with thee. — Heb., since I will be with thee. An answer addressed not to the thing said, but to the thing meant. Moses meant to urge that he was unfit for the mission. God’s reply is, “Not unfit, since I will be with thee.” I will supply all thy defects, make good all thy shortcomings. “My strength is made perfect in weakness.”
This shall be a token unto thee. — It is in accordance with the Divine economy to give men "tokens,” which are future, and appeal to faith only, (Comp. 1 Samuel 2:34; 2 Kings 19:27.)