Multi-Translation Layout:
23 But he who doubts is condemned if he eats, because he does not eat from faith; for whatever is not from faith is sin.
23 But if you have doubts about whether or not you should eat something, you are sinning if you go ahead and do it. For you are not following your convictions. If you do anything you believe is not right, you are sinning.
23 and he who is making a difference, if he may eat, hath been condemned, because 'it is' not of faith; and all that 'is' not of faith is sin.