All the Protestant Reformers, including Martin Luther, Huldrych Zwingli and John Calvin, held to infant baptism. Though these three great Protestants disagreed on many things, they all agreed on the Protestant doctrine of justification by grace alone, through faith alone, in Christ alone. They also agreed that infant baptism is a biblical practice and the best expression of the Protestant gospel. In fact, infant baptism has been the practice of the historic Christian church since the Apostolic period. Of course, the historic practice of the church does not settle the question. Historic practice, however, suggests a certain presumption in favour of infant baptism. Nevertheless, tradition alone is not sufficient reason for any practice in the church. Therefore Reformed Christians practise covenant baptism because we are commanded to do so in both the Old and New Covenant Scriptures. Read the full essay on The Heidelblog.