Further, bread and wine Nyss., Orat., Catech., ch. 37. are employed: for God knoweth man’s infirmity: for in general man turns away discontentedly from what is not well-worn by custom: and so with His usual indulgence He performs His supernatural works through familiar objects: and just as, in the case of baptism, since it is man’s custom to wash himself with water and anoint himself with oil, He connected the grace of the Spirit with the oil and the water and made it the water of regeneration, in like manner since it is man’s custom to eat and to drink water and wine Clem., Constit., bk. viii.; Justin Martyr., Apol. i.; Iren., v. 2., He connected His divinity with these and made them His body and blood in order that we may rise to what is supernatural through what is familiar and natural.