The question has an allusion too to our hidden calling. That predestination by which we are called, is hidden; and the sign of its being so is our Lord asking the question: He being as it were in ignorance, so long as we are ignorant ourselves. Or because our Lord elsewhere shews that He knows not sinners, saying, I know you not, (Matt. 7:23) because in keeping His commandments there is no sin.
They said unto Him, Lord, come and see.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: lib. 83. Quæst. qu. lxv.