## He put on righteousness as a breastplate and a helmet of salvation upon his head. He clothed himself with garments of vengeance and wore zeal as a mantle ##
This shows God preparing to punish the wicked people. (See: [[rc://en/ta/man/translate/figs-metaphor]])
## mantle ##
a loose, flowing robe
## He repaid them ##
Isaiah is describing a future event as if it happened in the past. This means that it will certainly happen.