The best comment upon this scripture is that of the apostle, where he hath remarked on tongues and prophecying. 1 Corinthians 14:22. And the best improvement will be to remember and pray for grace to observe what the Lord Jesus said to Thomas, John 20:29.
Related Commentaries of Exodus 4:2
Exodus 4:2-3
2 And the LORD said unto him, What is that in thine hand? And he said, A rod.
3 And he said, Cast it on the ground. And he cast it on the ground, and it became a serpent; and Moses fled from before it.