Part 2: This must be made to subside… We are taught that Judgment is like fire, which as we see either takes hold and flares up or subsides, as in “the fire subsided” (Numbers 11:2). See how all this is found in man down below: the fire of young people burns very strongly and they do not have much mercy. The older they become, the more this fire subsides and they become filled with mercy. Thus the elder is full of mercy, because the anger has already calmed down. When Judgment subsides, it does not cease altogether but is diminished.
Judgment as Fire That Rages in Youth and Subsides with Age
Kalach Pitchei Chokhmah 123:7