'Enemy' in the Bible

Even of late my people is risen up as an enemy: ye pull off the robe with the garment from them that pass by securely as men averse from war.

Rejoice not against me, O mine enemy: when I fall, I shall arise; when I sit in darkness, the LORD shall be a light unto me.

Then she that is mine enemy shall see it, and shame shall cover her which said unto me, Where is the LORD thy God? mine eyes shall behold her: now shall she be trodden down as the mire of the streets.