Matthew Poole and continuators on Exodus 3:12

12 And he said, Certainly I will be with thee; and this shall be a token unto thee , that I have sent thee: When thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.

Either 1. this vision, or 2. the fulfilling of this promise that I will be with thee by signs and wonders and a strong hand; or rather 3. this which here follows, that he and Israel should serve God there. Signs indeed are commonly given from things past or present, but sometimes from things to come, as here and 1 Sam. 2. 34. Isa. 7. 13. 14. and 9. 6. &c. Quest. How could Moses be confirmed in his present calling and work by a thing yet to come? A[illegible: 1+ letters]s. Such signs if they were single and the onely evidences of a mans calling might leave some ground for suspicion; but when they are accompanied with other signs, as it is here and in the other places produced, they are of great use for the corroboration of a mans faith. Moses was otherwise assured of the presence and power and faithfulness of that God who spake to him and was to expect more assurances that God would be with him to help him in and carry him through his work. And as an evidence that this work of bringing Israel out of Egypt should be compleated, he gives him a promise that he should serve God in that place: which promise coming from God, he knew to be as infallibly certain, as if it were already come to pass, and therefore this was an apt mean to strengthen his faith in his present undertaking.