Commentators like Spurgeon and Calvin emphasize that God's answer to Moses' self-doubt ("Who am I?") was not a list of Moses' qualifications, but a simple, all-sufficient promise: "Certainly I will be with thee." When you feel inadequate for a task God has given you, the core truth to cling to is not your own ability, but His empowering presence. As one scholar notes, this is the ultimate basis for confidence.