It is less correct to characterize the parables as “concealment.” Every parable has an open door through which those who want to understand can enter. It is true that the door must be sought and you must enter it. With a parable you have to enter and collect that which is offered openly in direct instruction. Speaking in parables therefore has nothing to do with a possible concealment of the mystery of the Messiah. It has everything to do with a people that shuns the sunlight of Jesus’ grace. Although this light continues to shine, it is dimmed as if by a cloud in the parable.1
12 afin qu'en voyant ils voient et n'aperçoivent point, et qu'en entendant ils entendent et ne comprennent point, de peur qu'ils ne se convertissent, et que les péchés ne leur soient pardonnés.