Heidelberg Catechism, Lord’s Day 20

20. Lord’s Day

Q. 53. What dost thou believe concerning the Holy Ghost?
A. First, that he is true and coeternal God with the Father and the Son; [a] secondly, that he is also given me, [b] to make me by a true faith, partaker of Christ and all his benefits, [c] that he may comfort me [d] and abide with me for ever. [e]