John Mark
Mark 4:27ESV·traditional attribution

He sleeps and rises night and day, and the seed sprouts and grows; he knows not how.

Matthew Henry Presbyterian @wholebiblehenry

The lessons which our Saviour designs to teach us here by parables and figurative expressions are these: - I. That those who are good ought to consider the obligations they are under to do good; that is, as in the parable before, to bring forth fruit.

Commenting on Mark 4:21-34

John Gill Reformed Baptist @doctorgill

But when it is sown, it groweth up,.... So the Gospel, when it was preached, it spread notwithstanding all the opposition made against it by, the Jews and Gentiles: there was no stopping it; though the Jewish sanhedrim charged the apostles to speak no more in the name of Jesus, they regarded them not; though Herod stretched forth his hands against the church, and killed...

Albert Barnes Presbyterian @notesbybarnes

Verse 27. And should sleep, and rise night and day. Should sleep in the night, and rise by day, for so the expression is to be understood. That is, should live in his usual way, without exerting any influence over the growing grain.