2 John 1:8 in the King James Version
Look to yourselves, that we lose not those things which we have wrought, but that we receive a full reward.
Context
7 For many deceivers have gone out into the world, those who don’t confess that Jesus Christ came in the flesh. This is the deceiver and the Antichrist.
8 Watch yourselves, that we don’t lose the things which we have accomplished, but that we receive a full reward.
9 Whoever transgresses and doesn’t remain in the teaching of Christ doesn’t have God. He who remains in the teaching has both the Father and the Son.