And he straitly charged them, and commanded them to tell no man that thing;

People's New Testament

9:18-21 He was alone praying. Only Luke informs us of this, his disciples being present, when he asked the question,

Whom say the people that I am? See notes on Peter's confession of faith, Mt 16:13-20 Mr 8:27-30.

Matthew Henry's Concise Commentary

9:18-27 It is an unspeakable comfort that our Lord Jesus is God's Anointed; this signifies that he was both appointed to be the Messiah, and qualified for it. Jesus discourses concerning his own sufferings and death. And so far must his disciples be from thinking how to prevent his sufferings, that they must prepare for their own. We often meet with crosses in the way of duty; and though we must not pull them upon our own heads, yet, when they are laid for us, we must take them up, and carry them after Christ. It is well or ill with us, according as it is well or ill with our souls. The body cannot be happy, if the soul be miserable in the other world; but the soul may be happy, though the body is greatly afflicted and oppressed in this world. We must never be ashamed of Christ and his gospel.