A credobaptist friend of mine posed these questions and I want to know how to correctly answer them. He tends to be a "chapter and verse" type of guy who will seldom settle for anything other than explicit scriptural support. Is baptism and circumcision related in any way? If so, how so? Secondary question: what is the sign and seal of the covenant in the New Covenant? Thanks ahead of time for any input. I've only been paedobaptist for less than a year and I'm still learning every day.