Exodus 3:19

And I knew that the king of Egypt will not give you to go and not with a strong hand.

Exodus 5:2

And Pharaoh will say, Who is Jehovah, whose voice I shall hear to send forth Israel? I knew not Jehovah, and also I shall not send Israel forth.

Exodus 6:1

And Jehovah will say to Moses, Now thou shalt see what I will do to Pharaoh: for with a strong hand will he send them forth, and with a strong hand will he drive them out of his land.

Exodus 7:1-14

And Jehovah will say to Moses, See, I gave thee a God to Pharaoh: and Aaron thy brother shall be thy prophet

Psalm 136:11-12

And he will bring forth Israel from the midst of them: for his mercy is forever.

Isaiah 63:12-13

Leading by the right hand of Moses, the arm of his glory dividing the waters from before them to make to him an eternal name.

Treasury of Scripture Knowledge

Summary

And I am sure that the king of Egypt will not let you go, no, not by a mighty hand.

No, not by a mighty hand

Bible References

Will not

Exodus 5:2
And Pharaoh will say, Who is Jehovah, whose voice I shall hear to send forth Israel? I knew not Jehovah, and also I shall not send Israel forth.
Exodus 7:4
And Pharaoh will not hear to you; and I gave ray hand upon Egypt, and I brought forth my army, my people the sons of Israel, out of Egypt, with great judgments.

No, not by a mighty hand

Exodus 6:1
And Jehovah will say to Moses, Now thou shalt see what I will do to Pharaoh: for with a strong hand will he send them forth, and with a strong hand will he drive them out of his land.
Psalm 136:11
And he will bring forth Israel from the midst of them: for his mercy is forever.
Isaiah 63:12
Leading by the right hand of Moses, the arm of his glory dividing the waters from before them to make to him an eternal name.