Mark 4:10–12

And when he was alone, the twelve that were with him asked him the parable. 11And he said to them: To you it is given to know the mystery of the kingdom of God: but to them that are without, all things are done in parables: 12That seeing they may see, and not perceive; and hearing they may hear, and not understand; lest at any time they should be converted, and their sins should be forgiven them.