Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 9:23-27

“He is ashamed of Christ who says, Am I to believe on Him that is crucified? He also is ashamed of His words who despises the simplicity of the Gospel. But of him shall the Lord be ashamed in His kingdom, in the same manner as if a master of a household should have a bad servant, and be ashamed to have him.”