Jesus calls it the ‘mystery of the Kingdom of Heaven.’ When he says this, He is saying that in this parable called ‘the sower and the word,’ the secret law by which all things in heaven and in earth are governed is revealed. He says it’s a mystery, not because God has hidden it, but because people have not listened to God, who has revealed it and continues to reveal it. The mystery is this ~ “And He said, “The kingdom of God is as if a man should scatter seed on the ground, and should sleep by night and rise by day, and the seed should sprout and grow, he himself does not know how. For the earth yields crops by itself: first the blade, then the head, after that the full grain in the head” (Mark 4.26-28). Notice that it says ~ “… the seed should sprout and grow, he himself does not know how” (Mark 4.28).