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.
26. ashamed of me, and of my words—The sense of shame is one of the strongest in our nature, one of the social affections founded on our love of reputation, which causes instinctive aversion to what is fitted to lower it, and was given us as a preservative from all that is properly shameful. When one is, in this sense of it, lost to shame, he is nearly past hope (Zec 3:5; Jer 6:15; 3:3). But when Christ and "His words"—Christianity, especially in its more spiritual and uncompromising features—are unpopular, the same instinctive desire to stand well with others begets the temptation to be ashamed of Him, which only the 'expulsive power' of a higher affection can effectually counteract.
Son of man be ashamed, when he cometh, &c.—He will render to that man his own treatment; He will disown him before the most august of all assemblies, and put him to "shame and everlasting contempt" (Da 12:2). "Oh shame, to be put to shame before God, Christ, and angels!" [Bengel].