This is the first of the ten plagues with which the Lord visited Egypt: and a most awful one it was. I would just make one observation upon it; namely, that it is remarkable, that as the first punishment for the deliverance of the Lord's people, which Moses wrought, was the converting water into blood: so the first miracle in the work of grace which the Lord Jesus accomplished, was the turning water into wine! All that comes by Moses' law is terror, but grace and truth come by Jesus Christ.
Related Commentaries of Exodus 7:14
Exodus 7:14-18
14 And the LORD said unto Moses, Pharaoh's heart is hardened, he refuseth to let the people go.
15 Get thee unto Pharaoh in the morning; lo, he goeth out unto the water; and thou shalt stand by the river's brink against he come; and the rod which was turned to a serpent shalt thou take in thine hand.
16 And thou shalt say unto him, The LORD God of the Hebrews hath sent me unto thee, saying, Let my people go, that they may serve me in the wilderness: and, behold, hitherto thou wouldest not hear.
17 Thus saith the LORD, In this thou shalt know that I am the LORD: behold, I will smite with the rod that is in mine hand upon the waters which are in the river, and they shall be turned to blood.
18 And the fish that is in the river shall die, and the river shall stink; and the Egyptians shall lothe to drink of the water of the river.