John Trapp on Isaiah 63:4

Ver. 4. For the day of vengeance is in mine heart] Or, was in mine heart: hence I made ſuch havock. Chriſt is the Lord God of Recompences, Jer. 51.56. and the Lord God of revenges, Pſal. 94.1. he is jealous and furious, Nah. 1.2. (See the Note there) his feet wherewith he treadeth down his enemies, are like unto fine braſs as if they burned in a furnace, Rev. 1.15. Oh it is a fearful thing to fall into the puniſhing hands of this living God, Heb. 10.31.

And the year of my Redeemed is come] Their joyful Jubilee. It is hail with the Saints when ill with the wicked. The deliverance of thoſe is oft the deſtruction of theſe.