There's a great deal I appreciate about Wayne Grudem's Systematic Theology. He's raving mad about revelatory/attesting gifts, of course; and not a whole lot better on prophecy. But hey — nobody's perfect.
He has revised his section on baptism. His first edition said that a compromise (between pedo- and credo-) within a church. Now he's not so sure.
Read Grudem'[s thoughts and questions at the indispensable Justin Taylor's site.
Read John Piper's response. Sounds to me as if any Christian should be allowed to local church membership, regardless of his beliefs. Re-read that one, and think it through.
And Wayne Grudem responds to Pipers response to, well, him.
I don't feel free to comment myself, much, since I am a baptist member of a Presbyterian church, and pledged (from the heart) to preserve the unity of that church. Maybe we'll revisit this in the future.
But you feel free.
[PS -- if this dialogue continues, I'm unlikely to update endlessly]