Mark 4:10-13

But when He was alone, those around Him with the twelve asked Him about the parable. And He said to them, “To you it has been given to know the mystery of the kingdom of God; but to those who are outside, all things come in parables, so that ‘Seeing they may see and not perceive, And hearing they may hear and not understand; Lest they should turn, And their sins be forgiven them.’ ” And He said to them, “Do you not understand this parable? How then will you understand all the parables?