Another parable put he forth unto them, saying,
The kingdom of heaven is like to a grain of mustard seed, which a man took, and sowed in his field:
All Commentaries on Matthew 13:31 Go To Matthew 13
Hilary of Poitiers
AD 368
The Lord compared his reign with a grain of mustard seed, which is very pungent and the smallest of all seeds. Its inherent potency is heightened under stress and pressure. Therefore, after this grain is sown in the field— that is, when it has been seized by someone and delivered up to death as though buried in the field by a sowing of its body—it grows up to become larger than any herb and surpasses all the glory of the prophets.