'Enemy' in the Bible

'Ye heard that it was said: Thou shalt love thy neighbour, and shalt hate thine enemy;

and, while men are sleeping, his enemy came and sowed darnel in the midst of the wheat, and went away,

And he saith to them, A man, an enemy, did this; and the servants said to him, Wilt thou, then, that having gone away we may gather it up?

and the enemy who sowed them is the devil, and the harvest is a full end of the age, and the reapers are messengers.

lo, I give to you the authority to tread upon serpents and scorpions, and on all the power of the enemy, and nothing by any means shall hurt you;

said, 'O full of all guile, and all profligacy, son of a devil, enemy of all righteousness, wilt thou not cease perverting the right ways of the Lord?

I will recompense again, saith the Lord;' if, then, thine enemy doth hunger, feed him; if he doth thirst, give him drink; for this doing, coals of fire thou shalt heap upon his head;

the last enemy is done away -- death;

so that your enemy have I become, being true to you?

and as an enemy count him not, but admonish ye him as a brother;

Adulterers and adulteresses! have ye not known that friendship of the world is enmity with God? whoever, then, may counsel to be a friend of the world, an enemy of God he is set.