en_tn/act/15/03.md

They therefore, being sent by the church, passed

This is a passive sentence which can be translated as, "Therefore the church send Paul, Barnabas, and some other believers from Antioch to Jerusalem. They passed... ." (See: rc://en/ta/man/translate/figs-activepassive) (see: rc://en/ta/man/translate/figs-explicit)

passed through…announced

The words used for "passed through" and "announced" indicate they spent some time in different places sharing in detail what God was doing.​

the conversion of the Gentiles

Many Gentiles changed their belief from the Greek & Roman gods to believing in Jesus.

they were welcomed by the church and...

This is a passive construction that can be translated as "The church members welcomed them including..." (See: rc://en/ta/man/translate/figs-activepassive)

with them

"through them"