en_tn/2co/12/12.md

The true signs of an apostle were performed

This can be stated in active form, with emphasis on the "signs." Alternate translation: "It is the true signs of an apostle that I performed" (See: rc://en/ta/man/translate/figs-activepassive)

signs ... signs

Use the same word both times.

with all perseverance

"with as much perseverance as we had" or "with great perseverance"

signs and wonders and miracles

These are the "true signs of an apostle" that Paul performed "with complete perseverance."