Note that Tychicus is described not as a minister to Paul but as a minister in the Lord with regard to the gospel and the mystery.

Through Tychicus the Ephesians would learn how the apostle is faring, and he would ascertain how things are going in Ephesus. There was no doubt in their minds that the apostle's actions were godly. But the people at Ephesus needed to know more detail about how he was acting in response to idolatrous charges and ploys. And from the…

So that they might be happy to obey and listen to Tychicus Paul calls him a most beloved brother and a useful servant of God.

"But that ye also may know my affairs, how I do, Tychicus, the beloved brother and faithful minister in the Lord, shall make known to you all things." As soon as he had mentioned his chains, he leaves something for Tychicus also to relate to them of his own accord. For whatever topics there were of doctrine and of exhortation, all…

Ver. 12. "When I shall send Artemas unto thee, or Tychicus; be diligent to come unto me to Nicopolis." What sayest thou? After having appointed him to preside over Crete, dost thou again summon him to thyself? It was not to withdraw him from that occupation, but to discipline him the more for it. For that he does not call him to attend…

This might be understood in two ways: Either Tychicus was sent to Ephesus to announce to them that Paul's chains had become famous in the whole praetorium and his imprisonment had been profitable to the faith of the gospel … or Tychicus was sent to tell them more about Paul's life and daily work, of which they were not aware, so as to…

I have sent Tychicus to Ephesus. Bring the cloak that I left with Carpus at Troas, and the books, especially the parchments. I have sent Tychicus. See the unity through all things. Bring the cloak that I left. Here Paul mentions a certain garment. However, he seeks to ensure that he is not a burden to anyone in need. For this is of…