The Heidelberg Catechism

Lord’s Day 6Questions 16–18

Reformed Church in America English, 1879

About this text

Text public domain · U.S.

1879 Reformed Church in America Q&A text with inline proof references. Source: Wikisource scan transcription.

This English edition was published in the United States in 1879, before the current U.S. public-domain cutoff. Rights evidence. Verified 2026-07-14.

16

Why must he be very man, and also perfectly righteous?

Because the justice of God requires that the same human nature, which hath sinned, should likewise make satisfaction for sin (Ex. 32;33); and one, who is himself a sinner, cannot satisfy for others (Heb. 7;26, 27).

17

Why must he in one person be also very God?

That he might, by the power of his Godhead, sustain, in his human nature, the burden of God’s wrath (2 Cor. 13;4); and might obtain for, and restore to us righteousness and life (1 John 4;9).

18

Who then is that mediator who is in one person both very God, and a real righteous man?

Our Lord Jesus Christ (1 Tim. 2;5,—John 1;1, 14): “who of God is made unto us wisdom, and righteousness and sanctification, and redemption” (1 Cor. 1;30.—Col. 2;3.—2 Cor. 5;21.—Rom. 10;4.—Heb. 10;10.—Eph. 1;7.—Rom. 8;3.