'Stretched Out His Hand' in the Bible

And they did so: for Aaron stretched out his hand with his rod, and smote the dust of the earth, and it became lice in man and in beast; all the dust of the land became lice throughout all the land of Egypt.

And Moses stretched out his hand over the sea, and the LORD caused the sea to go back by a strong east wind all that night, and made the sea dry land, and the waters were divided.