Exodus 17:10 YLT

⁸  And Amalek cometh, and fighteth with Israel in Rephidim,

⁹  and Moses saith unto Joshua, 'Choose for us men, and go out, fight with Amalek: to-morrow I am standing on the top of the hill, and the rod of God in my hand.'

¹⁰  And Joshua doth as Moses hath said to him, to fight with Amalek, and Moses, Aaron, and Hur, have gone up 'to' the top of the height;

¹¹  and it hath come to pass, when Moses lifteth up his hand, that Israel hath been mighty, and when he letteth his hands rest, that Amalek hath been mighty.

¹²  And the hands of Moses 'are' heavy, and they take a stone, and set 'it' under him, and he sitteth on it: and Aaron and Hur have taken hold on his hands, on this side one, and on that one, and his hands are stedfast till the going in of the sun;