en_tn_condensed/col/04/09.md

the faithful and beloved brother

Paul calls Onesimus a fellow Christian and servant of Christ. He was a slave of Philemon in Colossae and had stolen money from Philemon and run away to Rome where he became a Christian through the ministry of Paul. Now Tychicus and Onesimus are the ones bringing Paul's letter to Colossae along with a letter from Paul to Philemon asking him to send Onesimus back to Paul.

They will make known

"Tychicus and Onesimus will make known"

everything that has happened here

Tradition says Paul was in Rome under house arrest or in prison at this time.