isaiah 7:15 Butter and honey shall he eat, that he may know to refuse the evil, and choose the good. - Free Bible Online

      15. Butter--rather, curdled milk, the acid of which is grateful in the heat of the East (Job 20:17).
      honey--abundant in Palestine (Jud 14:8; 1Sa 14:25; Mt 3:4). Physicians directed that the first food given to a child should be honey, the next milk [BARNABAS, Epistle]. HORSLEY takes this as implying the real humanity of the ImmanuelJesus Christ, about to be fed as other infants (Lu 2:52). Isa 7:22 shows that besides the fitness of milk and honey for children, a state of distress of the inhabitants is also implied, when, by reason of the invaders, milk and honey, things produced spontaneously, shall be the only abundant articles of food [MAURER].
      that he may know--rather, until He shall know.
      evil . . . choose . . . good--At about three years of age moral consciousness begins (compare Isa 8:4; De 1:39; Jon 4:11).

JFB.