Exodus 17:12

Then the hands of Moses became heavy. And so, taking a stone, they placed it beneath him, and he sat on it. Then Aaron and Hur sustained his hands from both sides. And it happened that his hands did not tire until the setting of the sun

Other versions

King James Version

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.

English Standard Version

But Moses' hands grew weary, so they took a stone and put it under him, and he sat on it, while Aaron and Hur held up his hands, one on one side, and the other on the other side. So his hands were steady until the going down of the sun.

New International Version

When Moses' hands grew tired, they took a stone and put it under him and he sat on it. Aaron and Hur held his hands up-one on one side, one on the other-so that his hands remained steady till sunset.