Isaiah 7:15

15. Butter and honey shall he eat The “butter” of the Old Testament was simply curdled milk. As Palestine was an easy region for cattle breeding, and wild bees were abundant and productive, so it was called “a land flowing with milk and honey.” These were the most easily procured foods for the common people, and the usual food for children. Hence it is but the ordinary children’s diet that is here specified for the child. Were it not that the amiable commentator, Albert Barnes, is so unwontedly severe upon the interpretation, we should not hesitate to say that the true meaning is, that the divine child would, though the divine Incarnate, eat the ordinary human food; so the resurrect Jesus ate before his disciples of their food to identify himself. How knew Isaiah’s contemporaries that the born Immanuel would eat, not of celestial food, but the plain diet of other children? And it is interesting to be told by Luke that “he increased in wisdom” just like any other child. Luke 2:52.

That he may know This word “that,” in the sense of in order that, greatly distresses some commentators. What, did he eat butter and honey in order to know, etc.? And so they substitute until for “that.” Now, we take it that the plain meaning is, that he ate the ordinary child’s food in order that he might as a muscle grows on food; and even the Incarnate submitted to the process.