16 Watch your life and doctrine closely. Persevere in them, because if you do, you will save both yourself and your hearers.

Read 1 Timothy 4:16 Using Other Translations

Take heed unto thyself, and unto the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee.
Keep a close watch on yourself and on the teaching. Persist in this, for by so doing you will save both yourself and your hearers.
Keep a close watch on how you live and on your teaching. Stay true to what is right for the sake of your own salvation and the salvation of those who hear you.