en_tn/gal/01/13.md

advancing

"making progress" or "going forward." This metaphor sees being a complete Jew as a place toward which Paul was going ahead of Jews his own age. (See: rc://en/ta/man/translate/figs-metaphor)

former life

"behavior at one time" or "prior life" or "earlier life"

beyond measure

"extremely" or "excessively" or "as much as I could" or "more than was necessary"

devastating

"destroying"

fellow

"Jewish people of the same age"

fathers

or "ancestors."