1 Timothy 4:15 in the King James Version
Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all.
Context
14 Don’t neglect the gift that is in you, which was given to you by prophecy with the laying on of the hands of the elders.
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.