But the Lord said to Moses, “Reach out your hand and grasp it by the tail.” So he reached out his hand and caught it, and it became a staff in his hand—

The Lord also said to him, “Put your hand into your robe [where it covers your chest].” So he put his hand into his robe, and when he took it out, his hand was leprous, as white as snow.

Jethro said, “Blessed be the Lord, who has rescued you from the hand of the Egyptians and from the hand of Pharaoh, and who has rescued the people from under the hand of the Egyptians.

Then God said, “Put your hand into your robe again.” So he put his hand back into his robe, and when he took it out, it was restored [and was] like the rest of his body.

Then the Lord said to Moses, “Now you shall see what I will do to Pharaoh; for under compulsion he will [not only] let them go, but under compulsion he will drive them out of his land.”

It shall serve as a sign to you on your hand (arm), and as a reminder on your forehead, so that the instruction (law) of the Lord may be in your mouth; for with a strong and powerful hand the Lord brought you out of Egypt.

So it shall serve as a sign and a reminder on your [left] hand (arm) and as frontlets between your eyes, for by a strong and powerful hand the Lord brought us out of Egypt.”

“Your right hand, O Lord, is glorious in power;
Your right hand, O Lord, shatters the enemy.

Now when Moses held up his hand, Israel prevailed, and when he lowered his hand [due to fatigue], Amalek prevailed.

eye for eye, tooth for tooth, hand for hand, foot for foot,