[T]he heretics upbraid us because the Holy Scripture says that the Lord was angry. Let them know therefore that our God is not angry like a man; for He is aroused in order to inspire fear; He drives away to summon back; He is angry in order to amend. (The History of the Franks Bk. 1.4)
Bede the Venerable ca. 673-735
Wisdom 12:18 But you, O Lord of power, judge with serenity.
Any sort of human judge judges someone failing in his duty with serenity of mind, even if he judges justly; but he is not able to imitate the justice of divine judgement, into which emotion does not know how to enter. (Commentary on James)