14:23 And he that {s} doubteth is damned if he eat, because [he eateth] not of faith: for whatsoever [is] not of faith is sin.
(s) Reasons with himself.
14:23 He that doubteth is condemned if he eateth. He is contrasted with him who has faith (Ro 14:22). He has not faith, or does not believe that it is right to eat these meats. Hence he is condemned ( damned ) by his own conscience.
Whatsoever [is] not from faith is sin. The context shows that Paul means that whenever actions are done by a Christian which he does not believe are right, he sins in doing them. If he is doubtful whether they are right, he must not do them.
14:23 Because it is not of faith - He does not believe it lawful and, in all these cases, whatsoever is not of faith is sin - Whatever a man does without a full persuasion of its lawfulness, it is sin to him.
14:19-23 Many wish for peace, and talk loudly for it, who do not follow the things that make for peace. Meekness, humility, self-denial, and love, make for peace. We cannot edify one another, while quarrelling and contending. Many, for meat and drink, destroy the work of God in themselves; nothing more destroys the soul than pampering and pleasing the flesh, and fulfilling the lusts of it; so others are hurt, by wilful offence given. Lawful things may be done unlawfully, by giving offence to brethren. This takes in all indifferent things, whereby a brother is drawn into sin or trouble; or has his graces, his comforts, or his resolutions weakened. Hast thou faith? It is meant of knowledge and clearness as to our Christian liberty. Enjoy the comfort of it, but do not trouble others by a wrong use of it. Nor may we act against a doubting conscience. How excellent are the blessings of Christ's kingdom, which consists not in outward rites and ceremonies, but in righteousness, peace, and joy in the Holy Ghost! How preferable is the service of God to all other services! and in serving him we are not called to live and die to ourselves, but unto Christ, whose we are, and whom we ought to serve.