Mark 4:11
He told them, the secret of the kingdom of God has been given to you. But to those on the outside everything is said in parables — the secret (mystērion) of the kingdom is the insider knowledge given to the disciples. The inside/outside distinction is stark: disciples receive the secret in plain speech; outsiders receive it in parable. This is not elitism but eschatology: the kingdom creates its own community of comprehension, those who have been drawn in by the call of the kingdom. The parables serve a dual function — they reveal to those inside and conceal from those outside, not because God arbitrarily prevents understanding but because the parables require the response of seeking that marks the insider.