John Gills Exposition of the Bible Commentary - Matthew 17:22
And while they abode in Galilee ,.... Munster's Hebrew Gospel reads it וכשהלכו , "and while they were walking in Galilee", for they passed through it, when they departed from hence; see Mark 9:30 and as they were going to Capernaum, and so onward, to the coasts of Judea, in order to be at Jerusalem at the feast of the passover; where, and when, Christ was to suffer: and observing that the time of his death drew nigh, he inculcates it again to his disciples a third time, that they might... read more
Matthew Henry's Complete Commentary - Matthew 17:22-23
Christ here foretels his own sufferings; he began to do it before (Matt. 16:21); and, finding that it was to his disciples a hard saying, he saw it necessary to repeat it. There are some things which God speaketh once, yea twice, and yet man perceiveth it not. Observe here, 1. What he foretold concerning himself?that he should be betrayed and killed. He perfectly knew, before, all things that should come to him, and yet undertook the work of our redemption, which greatly commends his love;... read more