Exodus 17:10-12

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