en_tn/act/15/36.md

Let us

"I suggest we"

visit the brothers

"visit" means to "care for" or "see how one can help."

see how they are

"learn about the current condition of the brothers and how they are holding on to the truth given to them."

take with them John who was called Mark

"take John, who was also called Mark, along with Paul and himself (Barnabas)"