Heidelberg Catechism, LORD’S DAY 3
Whence then proceeds this depravity of human nature?
From the fall and disobedience of our first parents, Adam and Eve, in Paradise; hence our nature is become so corrupt, that we are all conceived and born in sin.
Romans 5:12 Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned—
Romans 5:18 Therefore, as one trespass led to condemnation for all men, so one act of righteousness leads to justification and life for all men.
Romans 5:19 For as by the one man’s disobedience the many were made sinners, so by the one man’s obedience the many will be made righteous.
See also Genesis 3
Psalm 51:5 Behold, I was brought forth in iniquity, and in sin did my mother conceive me.
Genesis 5:3 When Adam had lived 130 years, he fathered a son in his own likeness, after his image, and named him Seth.
Are we then so corrupt that we are wholly incapable of doing any good, and inclined to all wickedness?
Indeed we are; except we are regenerated by the Spirit of God.
Genesis 8:21 And when the Lord smelled the pleasing aroma, the Lord said in his heart, “I will never again curse the ground because of man, for the intention of man’s heart is evil from his youth. Neither will I ever again strike down every living creature as I have done.
John 3:6 That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.
Genesis 6:5 The Lord saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually.
Job 14:4 Who can bring a clean thing out of an unclean? There is not one.
Job 15:14 What is man, that he can be pure? Or he who is born of a woman, that he can be righteous?
Job 15:16 how much less one who is abominable and corrupt, a man who drinks injustice like water!
Job 15:35 They conceive trouble and give birth to evil, and their womb prepares deceit.”
Isaiah 53:6 All we like sheep have gone astray; we have turned—every one—to his own way; and the Lord has laid on him the iniquity of us all.
John 3:3 Jesus answered him, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God.”
John 3:5 Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.
1 Corinthians 12:3 Therefore I want you to understand that no one speaking in the Spirit of God ever says “Jesus is accursed!” and no one can say “Jesus is Lord” except in the Holy Spirit.
2 Corinthians 3:5 Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God,
Historic Creeds and Confessions, electronic ed. (Oak Harbor: Lexham Press, 1997).