'Enemy' in the Bible

“But lately My people have stood up as an enemy [and have made Me their antagonist].You strip the ornaments off the garmentOf those unsuspecting passers-by,Like those returned from war.

Do not rejoice over me [amid my tragedies], O my enemy!Though I fall, I will rise;Though I sit in the darkness [of distress], the Lord is a light for me.

Then my enemy [all the pagan nations] shall see it,And shame [for despising the Lord] will cover her who said to me,“Where is the Lord your God?”My eyes will look on her [with satisfaction at her judgment];Now she (unbelievers) will be trampled downLike mud of the streets.