“Whom I have sent unto you for the same purpose, that ye might know our affairs, and that he might comfort your hearts.”
King James Version (KJV)
6:22 That he might comfort your hearts - By relating the supports I find from God, and the success of the gospel.
Eph 6:22 That ye might know our affairs, and [that] he might comfort your hearts. Tychicus was "a faithful minister" (Eph 6:21), and could not only satisfy their longing to know of Paul's state, but could comfort them.