en_tn/luk/01/80.md

became strong in spirit

AT: "became spiritually mature" or AT: "grew strong in his relationship with God" or AT: "developed a strong moral character"

until

“even when” This does not necessarily mark a stopping point. John continued to live out in the desert even after he started preaching publicly.

appear publicly to

"go before" or AT: "preach in public"