2 John 1:8

6 And this is love, that we walk according to His commandments. This is the very commandment you have heard from the beginning, that you must walk in love.

7 For many deceivers have gone out into the world, refusing to confess the coming of Jesus Christ in the flesh. Any such person is the deceiver and the antichrist.

Watch yourselves, so that you do not lose what we have worked for, but that you may be fully rewarded.

9 Anyone who runs ahead without remaining in the teaching of Christ does not have God. Whoever remains in His teaching has both the Father and the Son.

10 If anyone comes to you but does not bring this teaching, do not receive him into your home or even greet him.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Watch yourselves, so that you do not lose what we have worked for, but that you may be fully rewarded.
KJV
Look to yourselves, that we lose not those things which we have wrought, but that we receive a full reward.
WEB
Watch yourselves, that we don’t lose the things which we have accomplished, but that we receive a full reward.
ASV
Look to yourselves, that ye lose not the things which we have wrought, but that ye receive a full reward.
DARBY
See to yourselves, that we may not lose what we have wrought, but may receive full wages.
BLB
Watch yourselves, so that you⁺ may not lose what things we worked for, but you⁺ may receive a full reward.
ÅB
Ta dere i vare at dere ikke mister det dere har vunnet ved deres arbeide, men at dere kan få full lønn!
OTB
Vokt dere, så dere ikke mister det vi har oppnådd, men at dere kan få full lønn.
B1930
Ta eder i vare at I ikke mister det I har vunnet ved eders arbeide, men at I kan få full lønn!

Study notes (Tyndale)

Original text and word study

Cross references