'Enemy' in the Bible

Your right hand, O Lord, was majestic in power, your right hand, O Lord, shattered the enemy.

The enemy said, 'I will chase, I will overtake, I will divide the spoil; my desire will be satisfied on them. I will draw my sword, my hand will destroy them.'

But if you diligently obey him and do all that I command, then I will be an enemy to your enemies, and I will be an adversary to your adversaries.