1 Timothy 4:16 in the King James Version
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.
Context
15 Be diligent in these things. Give yourself wholly to them, that your progress may be revealed to all.
16 Pay attention to yourself and to your teaching. Continue in these things, for in doing this you will save both yourself and those who hear you.