KJV: But Moses' hands were heavy; and they took a stone, and put it under him, and he sat thereon; and Aaron and Hur stayed up his hands, the one on the one side, and the other on the other side; and his hands were steady until the going down of the sun.
NASB: But Moses' hands were heavy. Then they took a stone and put it under him, and he sat on it; and Aaron and Hur supported his hands, one on one side and one on the other. Thus his hands were steady until the sun set.
KJV: And the LORD said unto Moses, Write this for a memorial in a book, and rehearse it in the ears of Joshua: for I will utterly put out the remembrance of Amalek from under heaven.
NASB: Then the LORD said to Moses, "Write this in a book as a memorial and recite it to Joshua, that I will utterly blot out the memory of Amalek from under heaven."
KJV: And when Moses' father in law saw all that he did to the people, he said, What is this thing that thou doest to the people? why sittest thou thyself alone, and all the people stand by thee from morning unto even?
NASB: Now when Moses' father-in-law saw all that he was doing for the people, he said, "What is this thing that you are doing for the people? Why do you alone sit as judge and all the people stand about you from morning until evening?"
KJV: Thou wilt surely wear away, both thou, and this people that is with thee: for this thing is too heavy for thee; thou art not able to perform it thyself alone.
NASB: "You will surely wear out, both yourself and these people who are with you, for the task is too heavy for you; you cannot do it alone.
KJV: If thou shalt do this thing, and God command thee so, then thou shalt be able to endure, and all this people shall also go to their place in peace.
NASB: "If you do this thing and God so commands you, then you will be able to endure, and all these people also will go to their place in peace."