'Arms' in the Bible

So if Satan has risen in arms and has made war upon himself, stand he cannot, but meets his end.

And he took a child, and set him in the midst of them: and when he had taken him in his arms, he said unto them,

And he took them up in his arms, put his hands upon them, and blessed them.

because nation will rise up in arms against nation, and kingdom against kingdom. There will be earthquakes and famines in various places. These things are only the beginning of the birth pains."