“The Son of man is come eating and drinking; and ye say, Behold a gluttonous man, and a winebibber, a friend of publicans and sinners!”
Luke 7:34 — Greek Interlinear
Church Fathers on Luke 7:34
Having declared the praises of John, he next exposes the great fault of the Pharisees and lawyers, who would not after the publicans receive the baptism of John. Hence it is said, And all the people that heard him, and the Publicans, justified God.
God is justified by baptism, wherein men justify themselves confessing their sins. For he that sins and confesses his sin to God justifies God, submitting himself to Him who overcomes, and hoping for grace from Him; God therefore is justified by baptism, in which there is confession and pardon of sin.
Because also they believed, they justified God, for He appeared just to them in all that He did. But the disobedient conduct of the Pharisees in not receiving John, accorded not with the words of the prophet, That you might be justified when you speak. Hence it follows, But the Pharisees and lawyers rejected the counsel of God, &c.