Bible Verses About Parables: Seed growing secretly

Also he said, So is the kingdome of God, as if a man should cast seede in the ground,

And shoulde sleepe, and rise vp night and day, and the seede should spring and growe vp, he not knowing howe.

For the earth bringeth foorth fruite of it selfe, first the blade, then the eares, after that full corne in the eares.

And assoone as the fruite sheweth it selfe, anon hee putteth in the sickle, because the haruest is come.