Westminster Larger Catechism in modern English question number thirty-five:
Q. 35. How is the Covenant of Grace administered under the New Testament?
A. Christ, who is the substance of what was foreshadowed in the Old Testament, was revealed in the New Testament. Under the New Testament, the same Covenant of Grace was and still is to be administered in the preaching of the Word and the administration of the sacraments of Baptism and the Lord’s Supper. In these things, grace and salvation are held forth in more fullness, evidence, and efficacy to all nations.