Patristic Wisdom: Looking to the Fourteenth Sunday after Pentecost

From that time Jesus began to show to His disciples that He must go to Jerusalem, and suffer many things from the elders and chief priests and scribes, and be killed, and be raised the third day. Then Peter took Him aside and began to rebuke Him, saying, “Far be it from You, Lord; this shall not happen to You!” But He turned and said to Peter, “Get behind Me, Satan! You are an offense to Me, for you are not mindful of the things of God, but the things of men.” Then Jesus said to His disciples, “If anyone desires to come after Me, let him deny himself, and take up his cross, and follow Me. For whoever desires to save his life will lose it, but whoever loses his life for My sake will find it. For what profit is it to a man if he gains the whole world, and loses his own soul? Or what will a man give in exchange for his soul? For the Son of Man will come in the glory of His Father with His angels, and then He will reward each according to his works. Assuredly, I say to you, there are some standing here who shall not taste death till they see the Son of Man coming in His kingdom.” (Matthew 16:21–28)

What He intended when He forbade them to publicly declare Him Christ is clarified in part by “From that time Jesus began to show his disciples how He must go to Jerusalem and suffer many things from the elders” and the following thoughts. At the right time and in the right way, He proclaimed to those who knew that Jesus was Christ, Son of the living God (the Father had revealed this to them), that rather than believing in Jesus Christ already crucified, they should believe in Jesus Christ soon to be crucified. So also, instead of believing in Jesus Christ already risen from the dead, they should believe in “Jesus Christ soon to be raised from the dead.”

“Having put off from himself the principalities and powers, He made a show of them openly, triumphing over them in the cross.” If anyone is ashamed of the cross of Christ, he is ashamed of the agency by which these powers were defeated. The one who both believes and is assured of these things should, more appropriately, glory in the cross of our Lord and Savior Jesus Christ. Through that cross, when Christ was crucified, the principalities (among them, I think, was also the prince of this world) were publicly humiliated and paraded before the eyes of the believing world.

Origen, Commentary on Matthew 12.18