Certainly I will be with thee — Those that are weak in themselves, yet may do wonders being strong in the Lord, and in the power of his might. God's presence puts wisdom and strength into the weak and foolish, and is enough to answer all objections.
Related Commentaries of Exodus 3:12
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.