Can one go upon hot coals, and his feet not be burned?
Ver. 28. Can one go upon hot coals?] Similitudes are never set out to confirm or confute, but to adorn and illustrate, giving unto their matter a certain kind of lively gesture, and stirring up thereby men's drowsy minds to the consideration and acknowledgment of the truth, and to the pursuit and practice of virtue and godliness. Of the great use of similes, we may read in Chrysost., Hom. in Gen.; Origen in Levit.; August. de Doctrina Christ., lib. ii.; Greg. Moral., lib. iii. cap. 36, &c.