The Apostle Paul
Colossians 4:8BSB·traditional attribution

I have sent him to you for this very purpose, that you may know about us, and that he may encourage your hearts.

Matthew Henry Presbyterian @wholebiblehenry

In the close of this epistle the apostle does several of his friends the honour to leave their names upon record, with some testimony of his respect, which will be spoken of wherever the gospel comes, and last to the end of the world. I. Concerning Tychicus, Col 4:7.

Commenting on Colossians 4:7-18

John Gill Reformed Baptist @doctorgill

Whom I have sent unto you for the same purpose,.... That is, to relate to them his affairs both temporal and spiritual; and also, that he might know your estate. The Arabic version renders it, "that I may know your estate" by him when he returned again; as whether they continued steadfast in the Gospel, and observed the order, ordinances, and discipline of it; how...

Albert Barnes Presbyterian @notesbybarnes

Verse 8. . (*) "estate" "no definition given"