Is practicing paedobaptism a "sin"? Mark Dever says yes. Mike Bird wants to slap him in the face with a soggy fish, calling this statement "theologically irresponsible, pastorally insensitive, and ecclesially arrogant." (Irony alert!) Dever calmly responds.
Update: Scott Clark of Westminster Seminary California explains why he doesn't see the big deal, and thinks that the WCF (28.5) refers to the refusal to practice paedobaptism as sin.