Exodus 17:10-12

Webster_Strongs(i)
  10 H3091 So Joshua H6213 [H8799] did H4872 as Moses H559 [H8804] had said H3898 [H8736] to him, and fought H6002 with Amalek H4872 : and Moses H175 , Aaron H2354 , and Hur H5927 [H8804] went up H7218 to the top H1389 of the hill.
  11 H4872 And it came to pass, when Moses H7311 [H8686] held up H3027 his hand H3478 , that Israel H1396 [H8804] prevailed H5117 [H8686] : and when he let down H3027 his hand H6002 , Amalek H1396 [H8804] prevailed.
  12 H4872 But Moses H3027 ' hands H3515 were heavy H3947 [H8799] ; and they took H68 a stone H7760 [H8799] , and put H3427 [H8799] it under him, and he sat H175 on it; and Aaron H2354 and Hur H8551 [H8804] held up H3027 his hands H259 , the one on the one side H259 , and the other on the other side H3027 ; and his hands H530 were steady H935 [H8800] until the going down H8121 of the sun.