1 Peter 3:18-22 - What are the necessities to camping? To school? To a healthy family? These are things that are absolutely necessary to these activities or lifestyles. Do you believe that our spiritual life has the same types of necessities? Our spiritual lives, in fact, are more important, because it's what dictates our eternity. So, to hear Peter talk about baptism the way he does in our passage, and to know that, in Acts 10:47,48 he insisted that new believers get baptized immediately, we must pay attention to what baptism is all about.