en_tn_condensed/isa/13/03.md

my chosen ones

"the ones I have set apart for myself" or "the army that I have set apart for myself"

I have summoned my mighty ones to vent my anger

Venting God's anger represents punishing people because of God's anger. Alternate translation: "I have called my mighty soldiers to punish the people of Babylon because they have made me angry" (See: rc://en/ta/man/translate/figs-metonymy)

they are my proudly exultant ones

"they are the ones who proudly exult." Why they proudly exult can be stated clearly. Alternate translation: "even my people, who proudly exult because of the great things I do" (See: rc://en/ta/man/translate/figs-explicit)

exultant

to rejoice very much, especially because of winning a contest or conflict