So get rid of all evil behavior. Be done with all deceit, hypocrisy, jealousy, and all unkind speech. Like newborn babies, you must crave pure spiritual milk so that you will grow into a full experience of salvation. Cry out for this nourishment, now that you have had a taste of the Lord’s kindness.
We've seen two other New Testament references to milk as being for infants. (See below.) Both admonish people to grow up and get on to food for the more mature. This reference to milk, however, encourages its consumption: Chug it! Enjoy it! Thrive from it! Maybe Peter's audience is newer believers, or maybe he's just encouraging them back to the basics since at this point persecution against Christians is strong and many are suffering for their faith.
Or maybe Peter just liked milk better than Paul or the writer of Hebrews. :-]
*I Corinthians 3.2 I had to feed you with milk, not with solid food, because you weren’t ready for anything stronger. (Feb 29,2012, entry)
*Hebrews 5.12-13 You are like babies who need milk and cannot eat solid food. For someone who lives on milk is still an infant and doesn’t know how to do what is right. (May 31, 2012, entry)