‘That he may know your estate.’ The Greek literally is ‘all about you, all around you.
Well, he challenges us. He was one of the earliest ministers around Paul but his characteristics should be true of all of us also. Now, this is God’s work in our hearts. Do we stifle it and run off after earthly interests and earthly things? This is the kind of person the Lord seeks to make out of each one of us. Well, Tychicus, one of the companions of Paul.