This artwork by Lippi shows Moses miraculously changing the Nile River into blood in the sight of Pharaoh. In the background, bathers in the River are suddenly disturbed. The sky and land appear dark and dead as God afflicts Egypt for holding His people captive.
Ex 7:14-24
First Plague: Water Turned into Blood.*
14Then the LORD said to Moses: Pharaoh is obstinate* in refusing to let the people go.
15In the morning, just when he sets out for the water, go to Pharaoh and present yourself by the bank of the Nile, holding in your hand the staff that turned into a snake.*
16Say to him: The LORD, the God of the Hebrews, sent me to you with the message: Let my people go to serve me in the wilderness. But as yet you have not listened.
17Thus says the LORD: This is how you will know that I am the LORD. With the staff here in my hand, I will strike the water in the Nile and it will be changed into blood.d
18The fish in the Nile will die, and the Nile itself will stink so that the Egyptians will be unable to drink water from the Nile.
19The LORD then spoke to Moses: Speak to Aaron: Take your staff and stretch out your hand over the waters of Egypt—its streams, its canals, its ponds, and all its supplies of water—that they may become blood. There will be blood throughout the land of Egypt, even in the wooden pails and stone jars.
20This, then, is what Moses and Aaron did, exactly as the LORD had commanded. Aaron raised his staff and struck the waters in the Nile in full view of Pharaoh and his servants, and all the water in the Nile was changed into blood.
21The fish in the Nile died, and the Nile itself stank so that the Egyptians could not drink water from it. There was blood throughout the land of Egypt.
22But the Egyptian magicians did the same* by their magic arts. So Pharaoh hardened his heart and would not listen to them, just as the LORD had said.
23Pharaoh turned away and went into his house, with no concern even for this.
24All the Egyptians had to dig round about the Nile for drinking water, since they could not drink any water from the Nile.
https://bible.usccb.org/bible/exodus/7
Saying the holy name of Jesus is the simplest way of praying always.
1-A prayer from Raphael the Archangel:
*While you are on this earth, you must praise the Lord God and give him thanks.
2-A prayer from Tobit and Tobias:
*They began to sing hymns of praise, giving thanks for all the mighty deeds God had done while his angel Raphael had been with them.
3-A simple Jesus prayer:
*Lord, Lord, Jesus Christ…Son of God…have mercy on me…Be kind to others…Work Hard…Be joyful.
4-Another prayer:
*When all that God asks of us is to be quiet and keep ourselves at peace-attentive to the secret work He is beginning in our souls-Be Empty and See That I Am God.
For you died, and your life is now hidden with Christ in God. When Christ, who is your life, appears, then you also will appear with him in glory.
Col 3:3–4