Do our good works merit nothing, even though it is God’s will to reward them in this life and in that which is to come?

Heidelberg Catechism

Question 63. Do our good works merit nothing, even though it is God’s will to reward them in this life and in that which is to come?

Answer. The reward comes not of merit, but of grace.[1]

[1] Mt 5:12; Lk 17:10; Rom 11:6; 2 Tim 4:7-8; Heb 11:6