Sh'mot 7:14-19 Then the L-RD said to Moshe, "Pharaoh's heart is stubborn; he refuses to let the people go. Go to Pharaoh in the morning as he is going out to the water, and station yourself to meet him on the bank of the Nile; and you shall take in your hand the staff that was turned into a serpent. And you will say to him, 'The L-RD, the G-d of the Hebrews, sent me to you, saying," Let My people go, that they may serve Me in the wilderness. But look, you have not listened until now. " 'Thus says the L-RD, "By this you shall know that I am the L-RD: look, I will strike the water that is in the Nile with the staff that is in my hand, and it shall be turned to blood. And the fish that are in the Nile will die, and the Nile will become foul; and the Egyptians will find difficulty in drinking water from the Nile." ' " Then the L-RD said to Moshe, "Say to Aharon, 'Take your staff and stretch out your hand over the waters of Egypt, over their rivers, over their streams, and over their pools, and over all their reservoirs of water, that they may become blood; and there shall be blood throughout all the land of Egypt, both in vessels of wood and in vessels of stone.'"
Side note: This will happen in the future also. Only instead of the Judgment of G-d coming through Moshe it will come through Yeshua.
Revelation 6:1 And I saw when the Lamb (Yeshua) broke one of the seven seals, NAS
He will be the one who is worthy to open the seals that bring the vials, and bowls of judgment on the whole earth.
Revelation 16:3-7And the second angel poured out his bowl into the sea, and it became blood like that of a dead man; and every living thing in the sea died. And the third angel poured out his bowl into the rivers and the springs of waters; and they became blood. And I heard the angel of the waters saying, "Righteous are you, who are and who was, O Holy One, because you did judge these things; for they poured out the blood of saints and prophets, and you have given them blood to drink. They deserve it. " And I heard the altar saying, "Yes, O L-rd G-d, the Almighty, true and righteous are your judgments."
Back to Moshe and Aharon:
Sh'mot 7:20-25 So Moshe and Aharon did even as the L-RD had commanded. And he lifted up the staff and struck the water that was in the Nile, in the sight of Pharaoh and in the sight of his servants, and all the water that was in the Nile was turned to blood. And the fish that were in the Nile died, and the Nile became foul, so that the Egyptians could not drink water from the Nile. And the blood was through all the land of Egypt. But the magicians of Egypt did the same with their secret arts; and Pharaoh's heart was hardened, and he did not listen to them, as the L-RD had said. Then Pharaoh turned and went into his house with no concern even for this. So all the Egyptians dug around the Nile for water to drink, for they could not drink of the water of the Nile. And seven days passed after the L-RD had struck the Nile. NAS
This is the first plague, turning water to blood. We will see that each plague is an attack on an Egyptian god. This is against Hapi, the god of the Nile.
With the help of HaShem Moshe turned water into blood from his staff. This was a foreshadowing of the Messiah Yeshua when He would turn water into wine. Wine would become symbolic of the blood of the Messiah shed for our iniquities. (John 6:16-21; Matt. 26:26-28)
This would be a struggle for Yeshua that would be a cup of suffering which He would endure for us. We cannot understand what a struggle it must have been for G-d coming down in the flesh (John 1:1) to take upon our ugliness, our depravity upon His Holy (set apart) and perfect nature. The burden would have been tremendous and He asked if it was possible it be taken away. If only it was not necessary or if only there was another way for our sins to be taken away to restore spiritual peace with the Father.
Mattityahu (Matthew) 26:39-46 Going a little farther, He fell with his face to the ground and prayed, "My Father, if it is possible, may this cup be taken from Me. Yet not as I will, but as You will." Then He returned to His disciples and found them sleeping. "Could you men not keep watch with Me for one hour?" He asked Peter. "Watch and pray so that you will not fall into temptation. The spirit is willing, but the body is weak. He went away a second time and prayed, "My Father, if it is not possible for this cup to be taken away unless I drink it, may your will be done." When He came back, He again found them sleeping, because their eyes were heavy. So He left them and went away once more and prayed the third time, saying the same thing. Then He returned to the disciples and said to them, "Are you still sleeping and resting? Look, the hour is near, and the Son of Man is betrayed into the hands of SINNERS. Rise, let us go! Here comes my betrayer!"
Would you make this effort for naught in your walk?
Trust His Word and then you too can enter His rest.
Hebrews 4:8-13 For if Y'hoshua had given them rest, He would not have spoken of another day after that. There remains therefore a Sabbath rest for the people of G-d. For the one who has entered His rest has himself also rested from his works, as G-d did from His. Let us therefore be diligent to enter that rest, lest anyone fall through following the same example of disobedience. For the word of G-d is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart. And there is no creature hidden from His sight, but all things are open and laid bare to the eyes of Him with whom we have to do. NAS
Spiritual Shalom with HaShem forever. It was necessary.
Hebrews 9:23-28 It was necessary therefore that the copies of the things in the heavens should be cleansed with these; but the heavenly things themselves with better sacrifices than these. For Messiah entered not into a holy place made with hands, like in pattern to the true; but into heaven itself, now to appear before the face of G-d for us: nor yet that he should offer himself often, as the high priest enters into the holy place year by year with blood not his own; else must he often have suffered since the foundation of the world: but now once at the end of the ages has he been manifested to put away sin by the sacrifice of himself. And inasmuch as it is appointed to men once to die, and after this (cometh) judgment; so Messiah also, having been once offered to bear the sins of many, shall appear a second time, apart from sin, to them that wait for him, to salvation.