Him that is weak in the faith receive ye, but not to doubtful disputations.
The subject here-and on to Romans 15:13 - is the consideration due from stronger Christians to their weaker brethren (with special reference to the Jewish peculiarities), which is but the great law of love (treated of in Romans 13:1-14) in one particular form.
Him that is weak in the faith - rather, 'in faith;' that is, not 'Him that is weak in the truth believed' (as Calvin, Beza, Alford, Webster and Wilkinson), but 'Him whose faith wants that firmness and breadth which would raise him above small scruples.' (So Erasmus, Grotius Estius, Fritzsche, Meyer, DeWette, Tholuck, etc.)
Receive ye (to cordial Christian fellowship), [but] not to doubtful disputations, х eis (G1519) diakriseis (G1253) dialogismoon (G1261)] - rather, perhaps, 'not to the deciding of doubts, or scruples;' i:e., not for the purpose of arguing him out of them, which indeed usually does the reverse; whereas to receive him to full brotherly confidence and cordial interchange of Christian affection is the most effectual way of drawing them off. Two examples of such scruples are here specified, touching Jewish meats and days. 'The strong,' it will be observed, are those who held these to be abolished under the Gospel; 'the weak' are those who had scruples on this point. Meats (Romans 14:2-4)