Mark 4:27
And should sleep, and rise night and day, and the seed should spring and grow up, he knoweth not how.
Cross-reference
Ecclesiastes 8:17
Parallel
Ecclesiastes 8:17 declares that man cannot fathom God's work—directly echoing the farmer's ignorance of how the seed grows.
Ecclesiastes 11:5
Parallel
Ecclesiastes 11:5 uses wind and womb growth as mysteries—almost a direct commentary on the farmer's unknowing observation of the seed.
John 3:8
Parallel
John 3:8 compares the Spirit's work to wind—unseen yet effective, exactly paralleling the farmer's ignorance of the seed's growth.
1 Corinthians 15:38
Parallel
1 Corinthians 15:38 states God gives the seed a body as He chooses—directly paralleling the divine role in the seed's growth that the farmer does not control.