Theophylact of Ohrid
Catena Aurea · Markusevangelium 10
And they were in the way going up to Jerusalem; and Jesus went before them: and they were amazed; and as they followed, they were afraid. And he took again the twelve, and began to tell them what things should happen unto him, Saying, Behold, we go up to Jerusalem; and the Son of man shall be delivered unto the chief priests, and unto the scribes; and they shall condemn him to death, and shall deliver him to the Gentiles: And they shall mock him, and shall scourge him, and shall spit upon him, and shall kill him: and the third day he shall rise again.
He did this to confirm the hearts of the disciples, that from hearing these things beforehand, they might the better bear them afterwards, and might not be alarmed at their suddenness, and also in order to shew them that He suffered voluntarily; for he who foreknows a danger, and flies not, though flight is in his power, evidently of his own will gives himself up to suffering. But He takes His disciples apart, because it was fitting that He should reveal the mystery of His Passion to those who were more closely connected with Him.