Heidelberg Catechism

Question 61. Why do you say that you are righteous by faith alone?

Answer: It is not that I am acceptable to God because of the worthiness of my faith, for only the satisfaction, righteousness, and holiness of Christ is my righteousness before God. (a) I can receive this righteousness and make it my own in no other way than by faith alone. (b)

(Scriptural proofs after the fold.)

a. 1 Corinthians 1:30-31

And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption, so that, as it is written, “Let the one who boasts, boast in th Lord.”

      1 Corinthians 2:2

For I decided to know nothing among you except Jesus Christ and him crucified.

b. Romans 10:10

For with the heart one believes and is justified, and with the mouth one confesses and is saved.

      1 John 5:10-12

Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son. And this is the testimony, that God gave us eternal life, and this life is in his Son. Whoever has the Son has life; whoever does not have the Son of God does not have life. (1 John 5:10-12 ESV)