And whither I go ye know
They might have known, at least, whither he was going, since he had spoke of his Father's house, and of his going to prepare a place for them there, and doubtless had some knowledge thereof, though very confused and imperfect:
and the way ye know:
this also they might have known from some expressions of his, that the way to his Father's house lay through sufferings and death, in which way they also were to follow him to his kingdom and glory. Though these words may be with an interrogation, "and whither I go do ye know? and the way do ye know?" which best agrees with Thomas's answer, and removes all appearance of contradiction between Christ's words and his.