Why Baptize Babies?

If Reformed and Presbyterian Churches claim to follow the Scriptures, why do they still baptize their infants? Isn't infant baptism just another bad idea held over from the Roman Church? Where do serious Bible-believing Christians find support for this practice?
In this book, Mark Horne provides brief but thorough answers to these questions. If you are looking for a quick introduction to the Reformed view of baptism and covenant membership, here is the place to start.
The "Answers in an Hour" series is an ongoing collection of short and easily digestible books written with the inquirer in mind. These little books provide brief studies of various topics of interest to Christians who seek instruction that is grounded in biblical theology.