King James Version
Read in contextTake heed therefore that the light which is in thee be not darkness.
All translations
5 of 5 translations contain this numbered verse.
Take heed therefore that the light which is in thee be not darkness.
Therefore see whether the light that is in you isn't darkness.
Look therefore whether the light that is in thee be not darkness.
take heed, then, lest the light that `is' in thee be darkness;
Be careful, then, that the light within you is not darkness.