A.T. Robertson Commentary Titus 2:1

"But speak thou the things which befit the sound doctrine:" — Titus 2:1 (ASV)

But speak thou (συ δε λαλε). In contrast to these Pharisaic Gnostics in Crete.

Befit (πρεπε). Old verb to be becoming, seemly. See 1 Timothy 2:10; Ephesians 5:3. With dative case διδασκαλια.

Sound (υγιαινουση). Healthful as in 1:13; 2:2; 1 Timothy 1:10, common word in the Pastorals.