John Gills Exposition of the Bible Commentary - Exodus 7:9
When Pharaoh shall speak unto you, saying, show a miracle for you ,.... To prove that they came from God, the Jehovah they said they did, and that they were his ambassadors, and came in his name, and made the demand for him; which when he seriously reflected on things, he would be ready to require, hoping they would not be able to show any, and then he should have somewhat against them, and treat them as impostors: then thou shalt say unto Aaron, take thy rod ; the same that Moses had in... read more
Matthew Henry's Complete Commentary - Exodus 7:8-13
The first time that Moses made his application to Pharaoh, he produced his instructions only; now he is directed to produce his credentials, and does accordingly. 1. It is taken for granted that Pharaoh would challenge these demandants to work a miracle, that, by a performance evidently above the power of nature, they might prove their commission from the God of nature. Pharaoh will say, Show a miracle; not with any desire to be convinced, but with the hope that none will be wrought, and then... read more