To have had truth made known to you is not the same as understanding truth.
Parents will grasp this instantly. You’re
correcting your five-year old, and he asks why, so you explain. He can
process the words. He can retain the words. They have been “made known” to
him, and they have become part of his experience. They reside in his memory,
where he can access them and make use of them when he grows into them.
But your words are not of much practical use to him in the moment, because he doesn’t yet fully comprehend them.