These passages from Acts, 2 Corinthians, and Hebrews teach that God’s primary purpose for the miracles He worked through men was to authenticate His messengers as bearing a true revelation from God. There are many illustrations of this major purpose in the Old Testament. In Exodus chapters 3 and 4, God finally convinced Moses that he should represent Him in Egypt. To every one of Moses’ objections God responded with a supernatural sign that would authenticate Moses’ commission. In Exodus 4:30–31