John Gills Exposition of the Bible Commentary - Exodus 7:13
And he hardened Pharaoh's heart ,.... Or, "notwithstanding the heart of Pharaoh was hardened" F1 ויחזק "attamen obfirmatum est", Junius & Tremellius. ; though he saw the rods of his magicians devoured by rod; or "therefore" F2 "Itaque", Piscator. his heart was hardened, because he saw that the rods of his magicians became serpents as well as Aaron's; in which there was a deception of sight, and which was suffered for the hardening of his heart, there being other wonders and... 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