New American Standard Bible (©1995)
"If therefore your whole body is full of light, with no dark part in it, it will be wholly illumined, as when the lamp illumines you with its rays."

King James Bible
If thy whole body therefore be full of light, having no part dark, the whole shall be full of light, as when the bright shining of a candle doth give thee light.

Darby Bible Translation
If therefore thy whole body is light, not having any part dark, it shall be all light as when the lamp lights thee with its brightness.

English Revised Version
If therefore thy whole body be full of light, having no part dark, it shall be wholly full of light, as when the lamp with its bright shining doth give thee light.

Online Parallel Bible