2 So then because she touched the Lord, in watering, kissing, washing, anointing His feet; the Pharisee who had invited the Lord Jesus Christ, seeing He was of that kind of proud men of whom the Prophet Isaiah says, “Who say, Depart far from me, touch me not, for I am clean;” thought that the Lord did not know the woman. This he was thinking with himself, and saying in his heart, “This man if He were a prophet, would have known what woman this is that” has approached His feet.
He supposed that He did not know her, because He repelled her not, because He did not forbid her to approach Him, because He suffered Himself to be touched by her, sinner as she was. For whence knew he, that He did not know her? But what if He did know, O you Pharisee, inviter and yet derider of the Lord! Thou dost feed the Lord, yet by whom you are to be fed yourself, you do not understand. Whereby do you know, that the Lord did not know what that woman had been, save because she was permitted to approach Him, save because by His sufferance she kissed His Feet, save because she washed, save because she anointed them?
For these things a woman unclean ought not to be permitted to do with the Feet that are clean? So then had such a woman approached that Pharisee's feet, he would have been sure to say what Isaiah says of such; “Depart from me, touch me not, for I am clean.” But she approached the Lord in her uncleanness, that she might return clean: she approached sick, that she might return whole: she approached Him, confessing, that she might return professing Him.
Source: Sermons on Selected Lessons of the New Testament (New Advent)