by jimwalton » Sun Jul 07, 2013 8:27 pm
As you might have figured out, there's a simple answer and a MUCH longer and more complex answer. I'll give you the simple answer, and if you want me to plunge deeper, I will.
For Catholics (and some Protestants), baptism is a sacrament (there are other sacraments as well, such as the Eucharist, or communion). That means, simply put, that it actually DOES something. In Catholic theology, they baptize babies so that if the child should die before he or she reaches the age of accountability, they will go to heaven because beings baptized makes them, well, "saved", until they're old enough to decide for themselves.
For a bunch of Protestants, baptism is an ordinance, meaning, very simplistically, that we are asked to do it, but it's just a symbol of something else, and doesn't really DO anything. It's just a symbol.
It's hard to explain it briefly, because I'm bound to leave out some important stuff, but our belief is that Judaism (Old Testament) is notorious unsacramental. No holy "things" possessed any supernatural power. It wasn't, "Here, touch this holy pot and you'll be healed!" or "If you touch this thing while you pray, you'll get what you pray for." Things are just "things," and God is the one who is holy. It has always been based on the relationship, not on some ritual anybody does. Even when Judaism lost its temple and land, it just kept rolling along without skipping a beat. And Christianity is even less sacramental, if that's even possible. In early Christianity there were no priests, no temples, no sacrifices—nothin'. Sacraments constitute "about as "religious" a technique as can ever be devised; and original Christianity was "religionless," and therefore without sacraments, if you understand what I mean. It was all about Jesus, not about religious rituals (Gal. 4.9-11). And sacraments are distinctly religious rituals.
Whenever someone says that a person can do something that obligates God to perform a desired action in response, there is "religion". But Christianity is all about the sovereignty of God and living by the Spirit, and it's not "religion" in that sense.
Catholics (and some Protestants) believe that as long as a baby is baptized, it will go to heaven if it dies, and if it's not baptized, then it won't. For a bunch of Protestants, we believe that salvation comes through grace by faith alone. So we only baptize people who can make a decision on their own.
That's really brief, but I hope it helps. If it doesn't, write back, ask questions, and I'll answer more.