Charles Ellicott Commentary Isaiah 63:4

"For the day of vengeance was in my heart, and the year of my redeemed is come." — Isaiah 63:4 (ASV)

The day of vengeance is. —Better, in both clauses, was, as pointing to the motive of the action, of which the blood-stained garments were the result.

The year of my redeemed ... —Better, the year of my redemption, namely, the work of redeeming my people.