Titus 2:1

σὺ δὲ λάλει. But do thou, in contrast with the ματαιολόγοι (as at 1 Timothy 6:11; 2 Timothy 3:10; 2 Timothy 4:5), speak, i.e. speak out boldly and plainly.

ἃ πρέπει τῇ ὑγιαινούσῃ διδασκαλἰᾳ, which befit (cp. 1 Timothy 2:10) the sound doctrine, sc. in contrast with the μῦθοι and ἐντολαὶ� of Titus 1:14. For ἡ ὑγ. διδασκαλία see on 1 Timothy 1:10.

i. Aged men