Parallel
Exodus 17:12
Rahlfs Septuagint (1935) · Berean Standard Bible
αἱ δὲ χεῖρες Μωυσῆ βαρεῖαι καὶ λαβόντες λίθον ὑπέθηκαν ὑπ᾿ αὐτόν καὶ ἐκάθητο ἐπ᾿ αὐτοῦ καὶ Ααρων καὶ Ωρ ἐστήριζον τὰς χεῖρας αὐτοῦ ἐντεῦθεν εἷς καὶ ἐντεῦθεν εἷς καὶ ἐγένοντο αἱ χεῖρες Μωυσῆ ἐστηριγμέναι ἕως δυσμῶν ἡλίου
When Moses’ hands grew heavy, they took a stone and put it under him, and he sat on it. Then Aaron and Hur held his hands up, one on each side, so that his hands remained steady until the sun went down.