NET
23 For if someone merely listens to the message and does not live it out, he is like someone who gazes at his own face in a mirror.
Darby
23 For if any man be a hearer of [the] word and not a doer, *he* is like to a man considering his natural face in a mirror:
KJV
23 For if any be a hearer of the word, and not a doer, he is like unto a man beholding his natural face in a glass: