You cannot acquire the gift of peace if by your anger you destroy the peace of the Lord.
Pope Gregory IWhatsoever then you have well in this world, when you recollect to have done any thing good, be very fearful about it, lest the prosperity granted you be your recompense for the same good. And when you behold poor men doing any thing blameably, fear not, seeing that perhaps those whom the remains of the slightest iniquity defiles, the fire of honesty cleanses.
Pope Gregory IBecause God that is immutable changes what He willed, He is said to repent, although what changes is a thing and not His counsel.
Pope Gregory I