18 And it happened, as He was alone praying, that His disciples joined Him, and He asked them, saying, "Who do the crowds say that I am?" 19 So they answered and said, "John the Baptist, but some say Elijah; and others say that one of the old prophets has risen again." 20 He said to them, "But who do you say that I am?" Peter answered and said, "The Christ of God."
21 And He strictly warned and commanded them to tell this to no one, 22 saying, "The Son of Man must suffer many things, and be rejected by the elders and chief priests and scribes, and be killed, and be raised the third day." 23 Then He said to them all, "If anyone desires to come after Me, let him deny himself, and take up his cross daily, and follow Me. 24 For whoever desires to save his life will lose it, but whoever loses his life for My sake will save it. 25 For what profit is it to a man if he gains the whole world, and is himself destroyed or lost? 26 For whoever is ashamed of Me and My words, of him the Son of Man will be ashamed when He comes in His own glory, and in His Father's, and of the holy angels.
Matthew Henry's Commentary on Luke 9:18-26
Commentary on Luke 9:18-27
(Read Luke 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.