Exodus 7:17

"And it shall come to pass, if they will not believe also these two signs, neither hearken unto thy voice, that thou shalt take of the water of the river, and pour it upon the dry land: and the water which thou takest out of the river shall become blood upon the dry land."

"And Pharaoh said, Who is the LORD, that I should obey his voice to let Israel go? I know not the LORD, neither will I let Israel go."

"And the Egyptians shall know that I am the LORD, when I stretch forth mine hand upon Egypt, and bring out the children of Israel from among them."

"Then shall they know that I am the LORD their God, which caused them to be led into captivity among the heathen: but I have gathered them unto their own land, and have left none of them any more there. which...: Heb. by my causing of them, etc"

"The LORD is known by the judgment which he executeth: the wicked is snared in the work of his own hands. Higgaion. Selah."

"Thus will I magnify myself, and sanctify myself; and I will be known in the eyes of many nations, and they shall know that I am the LORD."

"And had turned their rivers into blood; and their floods, that they could not drink."

"These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will."

"Now therefore, O LORD our God, I beseech thee, save thou us out of his hand, that all the kingdoms of the earth may know that thou art the LORD God, even thou only."

"And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood;"