Exodus 7:12-22

12 and they cast down each his rod, and they become monsters, and the rod of Aaron swalloweth their rods;
13 and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken.
14 And Jehovah saith unto Moses, `The heart of Pharaoh hath been hard, he hath refused to send the people away;
15 go unto Pharaoh in the morning, lo, he is going out to the water, and thou hast stood to meet him by the edge of the River, and the rod which was turned to a serpent thou dost take in thy hand,
16 and thou hast said unto him: Jehovah, God of the Hebrews, hath sent me unto thee, saying, Send My people away, and they serve Me in the wilderness; and lo, thou hast not hearkened hitherto.
17 `Thus said Jehovah: By this thou knowest that I [am] Jehovah; lo, I am smiting with the rod which [is] in my hand, on the waters which [are] in the River, and they have been turned to blood,
18 and the fish that [are] in the River die, and the River hath stank, and the Egyptians have been wearied of drinking waters from the River.'
19 And Jehovah saith unto Moses, `Say unto Aaron, Take thy rod, and stretch out thy hand against the waters of Egypt, against their streams, against their rivers, and against their ponds, and against all their collections of waters; and they are blood -- and there hath been blood in all the land of Egypt, both in [vessels of] wood, and in [those of] stone.'
20 And Moses and Aaron do so, as Jehovah hath commanded, and he lifteth up [his hand] with the rod, and smiteth the waters which [are] in the River, before the eyes of Pharaoh, and before the eyes of his servants, and all the waters which [are] in the River are turned to blood,
21 and the fish which [is] in the River hath died, and the River stinketh, and the Egyptians have not been able to drink water from the River; and the blood is in all the land of Egypt.
22 And the scribes of Egypt do so with their flashings, and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken,

Exodus 7:12-22 Meaning and Commentary

INTRODUCTION TO EXODUS 7

Moses and Aaron are ordered to go to Pharaoh, and require the dismission of the people of Israel, but they are told before hand that Pharaoh's heart would be hardened, and would refuse to let them go, until the hand of the Lord was stretched out, and great judgments were brought down upon, Egypt, and then they should come forth, Ex 7:1-5, which orders Moses and Aaron obeyed, and their age is observed, when this was done, Ex 7:6,7 and they are bid to work a miracle, when Pharaoh should demand one, by turning a rod into a serpent, which they did; but Pharaoh's magicians doing the same in appearance, his heart was hardened, Ex 7:8-14 and then they are directed to meet him at the river, and require the same as before; and if he refused, to smite the waters of the river with the rod, and turn them into blood, which they did, Ex 7:15-21, but Pharaoh's magicians doing the same by enchantments, he did not regard it, though the plague lasted seven days, Ex 7:22-25.

Young's Literal Translation is in the public domain.