Exodus 17:11-12

11Whenever Moses aheld up his hand, Israel prevailed, and whenever he lowered his hand, Amalek prevailed. 12But Moseshands grew weary, so they took a stone and put it under him, and he sat on it, while Aaron and bHur held up his hands, one on one side, and the other on the other side. So his hands were steady until the going down of the sun.

Joshua 8:26

26But Joshua did not draw back his hand with which he cstretched out the javelin until he had devoted all the inhabitants of Ai to destruction.
That is, set apart ( devoted) as an offering to the Lord (for destruction)
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