'Ally' in the Bible

For thou hast cast off thy people, the house of Jacob, because they are filled with what comes from the east, and use auguries like the Philistines, and ally themselves with the children of foreigners.

“The fortified city will disappear from Ephraim,And the kingdom from DamascusAnd the remnant of Aram (Syria);They will be like the [departed] glory of [her ally] the children of Israel,”Declares the Lord of hosts.

All of you, gather together and listen! Who among them announced these things? The Lord's ally will carry out his desire against Babylon; he will exert his power against the Babylonians.