The Heidelberg Catechism: Lord's Day 4

9. Question: Is God, then, not unjust by requiring in His law what man cannot
do?

 Answer: No, for God so created man that he was able to do it.[1] But man, at
the instigation of the devil,[2] in deliberate disobedience[3] robbed himself
and all his descendants of these gifts.[4]

 [1] Gen. 1:31. [2] Gen. 3:13; John 8:44; I Tim. 2:13, 14. [3] Gen. 3:6. [4] Rom. 5:12, 18, 19.

 10. Question: Will God allow such disobedience and apostasy to go unpunished?

 Answer: Certainly not. He is terribly displeased with our original sin as well as our actual sins. Therefore He will punish them by a just judgment both now and eternally,[1] as He has declared:[2] Cursed be every one who does not abide by all things written in the book of the law, and do them (Galatians 3:10).

 [1] Ex. 34:7; Ps. 5:4-6; 7:10; Nah. 1:2; Rom. 1:18; 5:12; Eph. 5:6; Heb. 9:27. [2] Deut. 27:26.

 11. Question: But is God not also merciful?

 Answer: God is indeed merciful,[1] but He is also just.[2] His justice requires that sin committed against the most high majesty of God also be punished with the most severe, that is, with everlasting, punishment of body and
soul.[3]

 [1] Ex. 20:6; 34:6, 7; Ps. 103:8, 9. [2] Ex. 20:5; 34:7; Deut. 7:9-11; Ps. 5:4-6; Heb. 10:30, 31. [3] Matt. 25:45,46.

The Heidelberg Catechism: Lord's Day 3

6. Question: Did God, then, create man so wicked and perverse?

Answer: No, on the contrary, God created man good[1] and in His image,[2] that is, in true righteousness and holiness,[3] so that he might rightly know God His Creator,[4] heartily love Him, and live with Him in eternal blessedness to praise and glorify Him.[5]

[1] Gen. 1:31. [2] Gen. 1:26, 27. [3] Eph. 4:24. [4] Col. 3:10. [5] Ps. 8.

7. Question: From where, then, did man's depraved nature come?

Answer: From the fall and disobedience of our first parents, Adam and Eve, in Paradise,[1] for there our nature became so corrupt[2] that we are all conceived and born in sin.[3]

[1] Gen. 3. [2] Rom. 5:12, 18, 19. [3] Ps. 51:5.

8. Question: But are we so corrupt that we are totally unable to do any good and inclined to all evil?

Answer: Yes,[1] unless we are regenerated by the Spirit of God.[2]

[1] Gen. 6:5; 8:21; Job 14:4; Is. 53:6. [2] John 3:3-5.