See the notes at Matthew 17:22-23.

They - passed through Galilee - See on Matthew 17:22-27 (note).

And they departed thence, and (i) passed through Galilee; and he would not that any man should know [it].
(i) He and his disciples together.

And they departed thence,.... From the coasts of Caesarea Philippi, from that part of the country where the mountain was, on which Christ was transfigured, and at the foot of which the above miracle was wrought. This is to be understood of Christ and his twelve disciples, though the Syriac, Arabic, and Ethiopic versions read in the singular number, "he went out"; not alone, but with his disciples, as the following account shows:
and passed through Galilee; in order to go to the coasts of Judea, and so to Jerusalem, where he was shortly to suffer: and therefore that his journey might not be retarded, and he be hindered by the conversation of the people in Galilee, and their importunity to stay with them, and teach, and work miracles among them, he passed through the country, in as private a manner as could be:
and he would not that any man should know it; partly for the reason just mentioned, and partly that he might have the opportunity of conversing alone with his disciples, and of reminding, and informing them, of some important things, which it was necessary they should be acquainted with, and observe.

The time of Christ's suffering drew nigh. Had he been delivered into the hands of devils, and they had done this, it had not been so strange; but that men should thus shamefully treat the Son of man, who came to redeem and save them, is wonderful. Still observe that when Christ spake of his death, he always spake of his resurrection, which took the reproach of it from himself, and should have taken the grief of it from his disciples. Many remain ignorant because they are ashamed to inquire. Alas! that while the Saviour teaches so plainly the things which belong to his love and grace, men are so blinded that they understand not his sayings. We shall be called to account about our discourses, and to account for our disputes, especially about being greater than others. Those who are most humble and self-denying, most resemble Christ, and shall be most tenderly owned by him. This Jesus taught them by a sign; whoever shall receive one like this child, receives me. Many have been like the disciples, ready to silence men who have success in preaching to sinners repentance in Christ's name, because they follow not with them. Our Lord blamed the apostles, reminding them that he who wrought miracles in his name would not be likely to hurt his cause. If sinners are brought to repent, to believe in the Saviour, and to live sober, righteous, and godly lives, we then see that the Lord works by the preacher.

And they departed thence, and passed--were passing along.
through Galilee; and he would not that any man should know it--By comparing Matthew 17:22-23 and Luke 9:43-44 with this, we gather, that as our Lord's reason for going through Galilee more privately than usual on this occasion was to reiterate to them the announcement which had so shocked them at the first mention of it, and thus familiarize them with it by little and little, so this was His reason for enjoining silence upon them as to their present movements.

They passed through Galilee - Though not through the cities, but by them, in the most private ways. He was not willing that any should know it: for he taught his disciples - He wanted to be alone with them some time, in order to instruct them fully concerning his sufferings. The Son of man is delivered - It is as sure as if it were done already. Matthew 17:22; Luke 9:44.