Frank Turk has employed the “What about the Mormons?” reductio to baptism and the objectivity of the covenant. I’ve tried to challenge the validity of this. I think the discussion reveals many of the larger issues involved in the paedo/credo debate.
There’s also been some really fine discussion on the intentions and limits of the Bible over at Evangelical Catholicity. Jim Jordan and Peter Escalante are always gold, and this account is no different. If I could start a Seminary, these dudes would be my charter faculty, and then I’d enroll myself in all of their classes.