35 See to it, then, that the light within you is not darkness.

35 Therefore be careful lest the light in you be darkness.

35 Take heed therefore that the light which is in thee be not darkness.

35 Make sure that the light you think you have is not actually darkness.

35 Therefore take heed that the light which is in you is not darkness.

35 So be careful not to let the light in you become darkness.

35 Look therefore whether the light that is in thee be not darkness.

35 See therefore that the light which is in thee be not darkness.

35 So be careful that the light in you isn’t darkness.

35 Take care then, that the light in you is not darkness.

35 Therefore consider whether the light in you is not darkness.

35 Therefore pay careful attention that the light in you is not darkness!

35 So make sure that the light inside you is not darkness.