Luke 7:39,40 - Coke's Commentary on the Holy Bible

Now when the Pharisee—saw it, &c.— Simon, perceiving what was done, immediately concluded that Jesus could not be a prophet; since in that case, instead of allowing her even to touch him, he would certainly have expelled her from his presence forthwith, as the tradition of the elders directed; for it was a maxim among the Pharisees, that the very touch of the wicked caused pollution. But though Simon did not declare his sentiments, they were not hidden from Christ; who, to shew him that he was a prophet, and that he knew not only the characters of men, but the inward and invisible state of their minds, conversed with him immediately upon the subject of his thoughts. The scope indeed of what he said was, to convince Simon how absurdly he reasoned. Nevertheless Jesus did not expose him before the company, by making what he said within himself public; but with great delicacy pointed out the unreasonableness of his thoughts to Simon alone, without letting the guests at table know any thing of the matter. Instead of Master, some render the word Διδασκαλε (and, as it seems, more properly) O teacher; for Διδασκαλε certainly expresses more than the English word Master, especially in the sense wherein we now use it.