Ex 17:10-12 (King James)

¹⁰ So Joshua did as Moses had said to him, and fought with Amalek: and Moses, Aaron, and Hur went up to the top of the hill. ¹¹ And it came to pass, when Moses held up his hand, that Israel prevailed: and when he let down his hand, Amalek prevailed. ¹² 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.

Ex 17:10-12 (Vulgate)

   ¹⁰ Fecit Josue ut locutus erat Moyses, et pugnavit contra Amalec : Moyses autem et Aaron et Hur ascenderunt super verticem collis.
   ¹¹ Cumque levaret Moyses manus, vincebat Israël : sin autem paululum remisisset, superabat Amalec.
   ¹² Manus autem Moysi erant graves : sumentes igitur lapidem, posuerunt subter eum, in quo sedit : Aaron autem et Hur sustentabant manus ejus ex utraque parte. Et factum est ut manus illius non lassarentur usque ad occasum solis.