Tradition
St. Francis de Sales
Treatise on the Love of God
Book IX › Chapter VII · Part 2 of 2
Indeed, as I have said above, the church condemned the error of certain solitaries, who held that we might be perfectly delivered even in this world from the passions of anger, concupiscence, fear, and the like. God wills us to have enemies, and it is also his will that we should repulse them. Let us then behave ourselves courageously between the one and the other will of God, enduring with patience to be assaulted, and endeavouring with courage by resistance to make head against, and resist our assailants.
Source: Treatise on the Love of God (CCEL)