John Gill Commentary Luke 19:22

"He saith unto him, Out of thine own mouth will I judge thee, thou wicked servant. Thou knewest that I am an austere man, taking up that which I laid not down, and reaping that which I did not sow;" — Luke 19:22 (ASV)

And he saith unto him
By way of reply to his vile slander, and unrighteous charge;

out of your own mouth will I judge you, you wicked servant ;
as he might be justly called: he was not only a wicked man, as all men are, even enemies by wicked works, and lie in wickedness; and a wicked professor of religion, as there be some; but a wicked minister, and that not on account of his bad principles, and sinful life and conversation, but for his sloth and negligence, and the wrong thoughts he entertained of, and the false charges he brought against Christ; and Christ turns his own argument upon him, and by his own words condemns him:

you knew that I was an austere man, taking up that I laid not
down, and reaping that I did not sow ;
not allowing this, but supposing it was as he said; then Christ argues as follows, for his conviction.