Q21: What is true faith?
A21: True faith is not only a sure knowledge, whereby I hold for truth all that God has revealed to us in His Word,[1] but also a hearty trust,[2] which the Holy Ghost [3] works in me by the Gospel,[4] that not only to others, but to me also, forgiveness of sins, everlasting righteousness, and salvation are freely given by God,[5] merely of grace, only for the sake of Christ’s merits.[6]
1. James 1:6
2. Rom. 4:16-18; 5:1
3. II Cor. 4:13; Phil. 1:19, 29
4. Rom. 1:16; 10:17
5. Heb. 11:1-2; Rom. 1:17
6. Eph. 2:7-9; Rom. 3:24-25; Gal. 2:16; Acts 10:43
The Heidelberg Catechism Q&A: 21

