Exodus 3:19
For I am sure that the king of Egypt will not let you go except by a mighty hand.
Exodus 5:2
And Pharaoh said, Who is the LORD, that I should hearken to his voice to let Israel go? I do not know the LORD, neither will I let Israel go.
Exodus 6:1
Then the LORD said unto Moses, Now thou shalt see what I will do to Pharaoh; for with a strong hand he must let them go, and with a strong hand he shall drive them out of his land.
Exodus 7:1-14
The LORD said unto Moses, See, I have constituted thee as god unto Pharaoh; and Aaron, thy brother, shall be thy prophet.
Psalm 136:11-12
And brought out Israel from among them: for his mercy endures for ever:
Isaiah 63:12-13
He that led them by the right hand of Moses with the arm of his glory, he who divided the water before them, thus making himself an everlasting name.