John Chrysostom
Individuals often doubt the reality of miracles that have already occurred, so the Lord ensures they are safeguarded from such skepticism through their own responses. This was evident at the resurrection of Lazarus and in the experience of Moses. God asked Moses, “What is that in thy hand?” This was to remind him that he had previously held a rod, so when he witnessed the transformation of the serpent into a rod, he would be filled with wonder at the miracle. Because remarkable occurrences often overshadow prior circumstances, God prepared Moses by reminding him of his current situation. Thus, when he was later filled with awe, he would remain aware of what he had personally affirmed, enabling him to appreciate the magnitude of the miracle through the juxtaposition of his experiences.