This can be a challenge for us today because there are so many things in our lives that cry out for attention, that take our energy, and consume our passions. But Peter reminds us that the one who is truly born again, will long for the presence of the Lord; and not just long for Him on Sunday mornings alone.
We must reject the Sunday morning only, spectator mentality of the Christian faith. Being a Christian is not dependent upon, nor is it summed up by simply attending a church service and looking bored with the preacher. That isn't what it means to be a follower of Christ. Following Christ is living dynamically. It's a craving for God, to know God, to be excited about God. It’s an all-consuming passion for Him.
Indifference and lukewarmness is very dangerous. We hear this from too many people these days, “if I have time, if it works out, if I've got the money, if I'm not doing anything else… then I will go after God with my everything.” We can’t give God our leftovers.
A little baby not only desires its mother's milk, but that baby has a powerful, instinctive urge for that milk. This is what Peter is talking about here… having an URGE, a craving, a passion for the Lord, for His Presence, His truth, His Word, His Ways.
If you're a believer, are you craving the Lord?