1 Peter 2:2-3, HCSBLike newborn infants, desire the unadulterated spiritual milk, so that you may grow by it in [your] salvation, since you have tasted that the Lord is good.
Being a new father, I'm now very familiar with how vocal a newborn can be about her desire to eat. That desire--all-encompassing, passionate, and loud--is a perfect example for how Christians should desire to grow closer to the Lord.