But wisdom is justified of all her children.
] That is, Christ, who is the wisdom of God, and who acted the wise part, in behaving in such a free manner with all sorts of men, and even with publicans and sinners, whereby he became useful to their souls, called them to repentance, converted and saved them: and these are his children, which were given him by the Father; for whose sake he partook of flesh and blood, and whom he redeemed, that they might receive the adoption of children; and to whom, believing in him, he gives power to become the children of God: and these justify him from all such scandalous imputations, and by their lives and conversations show, that the doctrine of Christ is not a licentious one, or leads to libertinism, and indulges men in their carnal sensual lusts and pleasures; but, on the contrary, teaches them to deny ungodliness and worldly lusts, and to live soberly, righteously, and godly: the word "all", is inserted by Luke, which is not in Matthew; signifying, that this is the universal sense and practice of all the real offspring of Christ, the sons of wisdom, who are wise to do good.

Taken from John Gill's Exposition of the Bible

Luke 7:35 In-Context

33 For John the Baptist came neither eating bread nor drinking wine, and you say, ‘He has a demon.’

34 The Son of Man came eating and drinking, and you say, ‘Here is a glutton and a drunkard, a friend of tax collectors and sinners.’

35 But wisdom is proved right by all her children.”

36 When one of the Pharisees invited Jesus to have dinner with him, he went to the Pharisee’s house and reclined at the table.

37 A woman in that town who lived a sinful life learned that Jesus was eating at the Pharisee’s house, so she came there with an alabaster jar of perfume.