Matthew 13:33 - Joseph Benson’s Commentary on the Old and New Testaments

Another parable spake he unto them With a view still further to illustrate the progress of the gospel in the world, and of true religion in the soul. The kingdom of heaven is like unto leaven, which a woman hid That is, covered up; in three measures of meal Which seems to have been the quantity that they usually baked at once; till the whole was leavened For although the leaven seemed lost for a while in the mass of dough, it secretly wrought through it by a speedy though almost insensible fermentation. Thus shall the gospel spread in the world, and divine grace in the souls of men, influencing and assimilating their spirit and conduct.