In Mark 4:21, Christ continues to, quite literally, deepen his point about how the word works, by which he also means how he works. It is an idea, like a seed, he’s deeply hidden and that he, on purpose, hides because hidden things must in themselves, almost as if by their nature, be revealed. That is what the purpose of a hidden thing is: it is meant to be revealed, in the sense that a thing can be disclosed by no other means than being hidden. And he seems to say that if he has hidden in you, that is, if the word, like a seed, gets planted deeply in you, it will by its very nature, because of its depth, burst forth with manifold produce and fruition. And if the measure you use is a deep measuring stick, then the height it grows will be all the more; however, if you are shallow ground or hard ground measuring Jesus with a shallow ruler or no ruler at all, almost a zero ruler, then the seed will be taken away. And even what you had will be taken away.
Revealed things aren’t hidden, rather hidden things are revealed