Exodus 7:19

And Jehovah spoke to Moses, Say to Aaron, Take your rod, and stretch out your hand upon the waters of Egypt, upon their streams, upon their canals, and upon their pools, and upon every reservoir of their waters, that they may become blood. And blood shall be throughout all the land of Egypt, both in wooden and in stone vessels.

Exodus 8:5-6

And Jehovah spoke to Moses, Say to Aaron: Stretch out your hand with your rod over the streams, over the rivers, and over the ponds, and cause frogs to come up upon the land of Egypt.

Exodus 8:16

And Jehovah said to Moses, Say to Aaron: Stretch out your rod, and strike the dust of the land, so that it may become lice throughout all the land of Egypt.

Exodus 10:12

And Jehovah said to Moses, Stretch out your hand over the land of Egypt for the locusts, that they may come up upon the land of Egypt and eat every herb of the land, all that the hail has left.

Exodus 10:21

And Jehovah said to Moses, Stretch out your hand toward the heavens, that there may be darkness over the land of Egypt, so that one may even feel the darkness.

Exodus 14:21

And Moses stretched out his hand over the sea. And Jehovah caused the sea to recede by a strong east wind all that night, and made the sea dry land, and the waters were divided.

Exodus 14:26

And Jehovah said to Moses, Stretch out your hand over the sea, so that the waters may come again upon the Egyptians, upon their chariots, and upon their horsemen.

Genesis 1:10

And God called the dry land, Earth. And He called the gathering together of the waters, Seas. And God saw that it was good.

Exodus 9:22-23

And Jehovah said to Moses, Stretch forth your hand toward heaven, so that there may be hail in all the land of Egypt, upon man, and upon beast, and upon every herb of the field, throughout the land of Egypt.

Exodus 9:33

And Moses went out of the city from Pharaoh, and spread abroad his hands to Jehovah. And the thunder and hail stopped, and the rain was not poured upon the earth.

Treasury of Scripture Knowledge

Summary

And the LORD spake unto Moses, Say unto Aaron, Take thy rod, and stretch out thine hand upon the waters of Egypt, upon their streams, upon their rivers, and upon their ponds, and upon all their pools of water, that they may become blood; and that there may be blood throughout all the land of Egypt, both in vessels of wood, and in vessels of stone.

Their pools

Bible References

Stretch

Exodus 8:5
And Jehovah spoke to Moses, Say to Aaron: Stretch out your hand with your rod over the streams, over the rivers, and over the ponds, and cause frogs to come up upon the land of Egypt.
Exodus 9:22
And Jehovah said to Moses, Stretch forth your hand toward heaven, so that there may be hail in all the land of Egypt, upon man, and upon beast, and upon every herb of the field, throughout the land of Egypt.
Exodus 10:12
And Jehovah said to Moses, Stretch out your hand over the land of Egypt for the locusts, that they may come up upon the land of Egypt and eat every herb of the land, all that the hail has left.
Exodus 14:21
And Moses stretched out his hand over the sea. And Jehovah caused the sea to recede by a strong east wind all that night, and made the sea dry land, and the waters were divided.

Their pools

Genesis 1:10
And God called the dry land, Earth. And He called the gathering together of the waters, Seas. And God saw that it was good.

General references

Exodus 4:17
And you shall take this rod in your hand, with which you shall do signs.
Exodus 8:5
And Jehovah spoke to Moses, Say to Aaron: Stretch out your hand with your rod over the streams, over the rivers, and over the ponds, and cause frogs to come up upon the land of Egypt.
Exodus 9:22
And Jehovah said to Moses, Stretch forth your hand toward heaven, so that there may be hail in all the land of Egypt, upon man, and upon beast, and upon every herb of the field, throughout the land of Egypt.
Psalm 78:44
He turned their rivers into blood, and their floods, so that they could not drink.