Evil into the mind of god or man may come and go, so unapproved, and leave no spot or blame behind.
John MiltonO shame to men! Devil with devil damned Firm concord holds, men only disagree Of creatures rational, though under hope Of heavenly grace: and God proclaiming peace, Yet live in hatred, enmity, and strife Among themselves, and levy cruel wars, Wasting the earth, each other to destroy: As if (which might induce us to accord) Man had not hellish foes enough besides, That day and night for his destruction wait.
John Milton