Mark 4:28

For the earth yields crops by itself: first the blade, then the head, after that the full grain in the head.

Surrounding context

4:27 and should sleep by night and rise by day, and the seed should sprout and grow, he himself does not know how.

4:28 For the earth yields crops by itself: first the blade, then the head, after that the full grain in the head.

4:29 But when the grain ripens, immediately he puts in the sickle, because the harvest has come."

Translation and sources