Adam Clarke's Commentary on the Bible - Mark 4:27
And should sleep and rise night and day - That is, he should sleep by night, and rise by day; for so the words are obviously to be understood. He knoweth not how - How a plant grows is a mystery in nature, which the wisest philosopher in the universe cannot fully explain. read more
Adam Clarke's Commentary on the Bible - Mark 4:26
So is the kingdom of God - This parable is mentioned only by Mark, a proof that Mark did not abridge Matthew. Whitby supposes it to refer to the good ground spoken of before, and paraphrases is thus: - "What I have said of the seed sown upon good ground, may be illustrated by this parable. The doctrine of the kingdom, received in a good and honest heart, is like seed sown by a man in his ground, properly prepared to receive it; for when he hath sown it, he sleeps and wakes day after day,... read more