If the Jews, who wished to be separated from Christ, asked whither He was going, much more would the disciples, who wished never to be separated from Him, be anxious to know it. So with much love, and, at the same time, fear, they proceed to ask: Thomas saith unto Him, Lord, we know not whither Thou goest; and how can we know the way?
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. lxxiii. 2