Canons of Dort 1.17

Chapter 1 — First Head of Doctrine: Of Divine Predestination

Section 17. Article 17: The Salvation of the Infants of Believers. Since we must make judgments about God’s will from his Word, which testifies that the children of believers are holy, not by nature but by virtue of the gracious covenant in which they together with their parents are included, godly parents ought not to doubt the election and salvation of their children whom God calls out of this life in infancy.