How are you righteous before God?

Heidelberg Catechism

Question 60. How are you righteous before God?

Answer. Only by true faith in Jesus Christ:[1] that is, although my conscience accuses me, that I have grievously sinned against all the commandments of God, and have never kept any of them,[2] and am still prone always to all evil;[3] yet God, without any merit of mine,[4] of mere grace,[5] grants and imputes to me the perfect satisfaction,[6] righteousness, and holiness of Christ,[7] as if I had never committed nor had any sins, and had myself accomplished all the
obedience which Christ has fulfilled for me;[8] if only I accept such benefit with a believing heart.[9]

[1] Rom 3:21-28; Gal 2:16; Eph 2:8-9; Php 3:8-11;
[2] Rom 3:9-10;
[3] Rom 7:23;
[4] Dt 9:6; Ezek 36:22; Tit 3:4-5;
[5] Rom 3:24; Eph 2:8;
[6] 1 Jn 2:2;
[7] Rom 4:3-5; 2 Cor 5:17-19; 1 Jn 2:1;
[8] Rom 4:24-25; 2 Cor 5:21;
[9] Jn 3:18; Acts 16:30-31; Rom 3:22, 28, 10:10