Matthew 9:11

But how is it, one may say, that Paul commands, "If any man that is called a brother be a fornicator or covetous, with such an one no, not to eat?" In the first place, it is not as yet manifest, whether to teachers also he gives this charge, and not rather to brethren only. Next, these were not yet of the number of the perfect, nor of those who had become brethren. And besides, Paul commands, even with respect to them that had become brethren, then to shrink from them, when they continue as they were, but these had now ceased, and were converted. But none of these things shamed the Pharisees, but they accuse Him to His disciples, saying, "Why eateth your Master with publicans and sinners?" And when the disciples seem to be doing wrong, they intercede with Him, saying, "Behold thy disciples do that which is not lawful to do on the sabbath-day;" but here to them they discredit Him. All which was the part of men dealing craftily, and wishing to separate from the Master the choir of the disciples.

Luke seems to have related this a little differently; according to him the Pharisees say to the disciples, Why do ye eat and drink with Publicans and sinners? (Luke 5:30.) not unwilling that their Master should be understood to be involved in the same charge; insinuating it at once against Himself and His disciples. Therefore Matthew and Mark have related it as said to the disciples, because so it was as much an objection against their Master whom they followed and imitated. The sense therefore is one in all, and so much the better conveyed, as the words are changed while the substance continues the same.

They are here in a twofold error; first, they esteemed themselves righteous, though in their pride they had departed far from righteousness; secondly, they charged with unrighteousness those who by recovering themselves from sin were drawing near to righteousness.

For they do not come to Jesus while they remain in their original condition of sin, as the Pharisees and Scribes complain, but in penitence, as what follows proves; But Jesus hearing said, They that be whole need not a physician, but they that are sick.