'Man of War' in the Bible

For I have made Judah a bow bent for my use, I have made Ephraim the arrows of the bow; I will make your sons, O Zion, take up arms against your sons, O Greece, and will make you like the sword of a man of war.

And Ephraim will be like a man of war, and their hearts will be glad as with wine; and their children will see it with joy; their hearts will be glad in the Lord.