en_tn_condensed/act/15/23.md

They wrote this with their hands

One or more of the apostles and elders wrote the letter and gave it to Judas and Silas so Judas and Silas could give it to the Gentile brothers.

From the apostles and elders, your brothers, to the Gentile brothers in Antioch, Syria, and Cilicia: Greetings!

"This letter is from your brothers, the apostles and elders. We are writing to you Gentile believers in Antioch, Syria, and Cilicia. Greetings to you" or "To our Gentile brothers in Antioch, Syria, and Cilicia. Greetings from the apostles and elders, your brothers"

your brothers ... the Gentile brothers

Here the word "brothers" refers to fellow believers. By using these words, the apostles and elders assure the Gentile believers that they accept them as fellow believers.

Cilicia

This is the name of a province on the coast in Asia Minor north of the Island of Cyprus.