'Oppressor' in the Bible

O house of David, thus saith the LORD; Execute judgment in the morning, and deliver him that is spoiled out of the hand of the oppressor, lest my fury go out like fire, and burn that none can quench it, because of the evil of your doings.

Thus saith the LORD; Execute ye judgment and righteousness, and deliver the spoiled out of the hand of the oppressor: and do no wrong, do no violence to the stranger, the fatherless, nor the widow, neither shed innocent blood in this place.

He hath forsaken his covert, as the lion: for their land is desolate because of the fierceness of the oppressor, and because of his fierce anger.

“They have repeatedly stumbled;Indeed, they have fallen one against another.Then they said, ‘Get up! And let us go backTo our own people and our native landAway from the sword of the oppressor.’

“Cut off the sower from BabylonAnd the one who wields the sickle at the time of harvest;From before the sword of the oppressorThey will each turn back to his own peopleAnd they will each flee to his own land.