en_tn/act/15/33.md

After they…they were sent

"they" refers to Judas and Silas.

some time

"for a period of time" or "for several weeks"

they were sent away in peace from the brothers

"the believers said farewell as they left"

in peace from the brothers

in peace from the brothers as friends from the Antioch church

to those who had sent them

"to the Jerusalem Church that sent Judas and Silas"

But Paul and Barnabas stayed

"While Paul and Barnabas remained"

Some ancient authorities

This has to do with variations in different ancient manuscripts. (See: rc://en/ta/man/translate/translate-textvariants)