Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 8:4-15

“But to those who are unworthy of such mysteries, they are obscurely spoken. Hence it follows, But to the rest in parables, that seeing they might not see, and hearing they might not understand. For they think they see, but see not, and hear indeed, but do not understand. For this reason Christ hides this from them, lest they should beget a greater prejudice against them, if after they had known the mysteries of Christ, they despised them. For he who understands and afterwards despises, shall be more severely punished.”