1 Peter 2:2

2. As new-born babes Born of the word of God, 1 Peter 1:23. The members of these churches were not recent converts, as some suppose; for, through the labors of St. Paul and others, many churches in those countries had been founded nearly a score of years previously. If they were, we must not only take babes as in opposition to men, but milk as in opposition to strong meat, as in 1 Corinthians 3:2, and Hebrews 5:12. But no such contrast is intimated, and the whole tone of the epistle indicates vigour and large experience. The contrast is rather of babes and believers, and in a single respect: as babes, even the newly born, having once tasted the mother’s milk afterward desire it and are nourished by it, so the spiritually born, whether just now or long ago, having once tasted of the spiritual milk of the gospel, desire it as the food of their souls. Milk is simply the food, and not the kind of food: the kind is indicated in the adjective λογικον , translated here of the word, and sincere, that is, guileless, unadulterated, and undiluted. Irenaeus says of heretics, “They mix chalk with their milk.” Milk, then, is the true doctrine of the gospel the word which nourishes the soul.

Grow To full maturity in knowledge and grace. The best authorities add unto salvation, that is, toward eternal blessedness.