NET
23 But the man who doubts is condemned if he eats, because he does not do so from faith, and whatever is not from faith is sin.
Darby
23 But he that doubts, if he eat, is condemned; because [it is] not of faith; but whatever [is] not of faith is sin.
KJV
23 And he that doubteth is damned if he eat, because [he eateth] not of faith: for whatsoever [is] not of faith is sin.