The Old Testament is not contrary to the New; for both in the Old and New Testament everlasting life is offered to mankind by Christ, who is the only Mediator between God and man, being both God and man. Wherefore they are not to be heard who feign that the old fathers did look only for transitory promises. Although the law given from God by Moses, as touching ceremonies and rites, doth not bind Christians, nor ought the civil precepts thereof of necessity be received in any commonwealth, yet, notwithstanding, no Christian whatsoever is free from the obedience of the commandments which are called moral.

—The Thirty Nine Articles, VII. “Of the Old Testament.”–
(1571)

Neither are the forementioned uses of the Law contrary to the grace of the Gospel, but do sweetly comply with it; the Spirit of Christ subduing and enabling the will of man to do that freely, and cheerfully, which the will of God, revealed in the Law, requireth to be done.

—The Westminster Confession of Faith 19.7–
(1647)