John Chrysostom

"Whom I have sent unto you," saith he, "for this very purpose, that ye may know our state, and that he may comfort your hearts." This language he employs, not without a purpose, but in consequence of what he had been saying previously; "having girded your loins, having on the breastplate," &c., which are a token of a constant and unceasing advance; for hear what the Prophet saith, "Let it be unto him as the raiment wherewith he covereth himself, and for the girdle wherewith he is girded continually" (Ps. cix. …

Homily on Ephesians 24 ↗

Theophylact of Ohrid

Saint John Chrysostom says the following: "that you may know about us," that is, that he may inform you of what is happening with me and not allow you to be disheartened on my account, since I am in afflictions and wear chains. And this indicates love both on his part toward them and on their part toward him.

Commentary on Ephesians ↗

Thomas Aquinas

Since I am not able to leave, chained as I am, to tell you, Tychicus, my dearest brother and faithful minister in the Lord, will make known to you all things. Thus you can safely believe him about all these matters. "Who do you think is the faithful and wise steward?" (Lk. 12:42). He surely is such whom I have sent to you for this same purpose, that you may know the things concerning us. This is the disciple's recommendation. And what for? That he may comfort your hearts.

Commentary on Ephesians ↗