1 Tim 2:14, Hos 6:7, Gen 3:17-19, Gen 2:17, Rom 3:23, Rom 6:23, Isa 59:2, Jn 8:44
God told Adam not to eat of the forbidden fruit and warned that the day he ate of it he would surely die. (Genesis 2:17)
Genesis 2:17 But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
However, Adam was deceived by Satan and broke God's covenant and ate of the forbidden fruit. (Genesis 3:6, 1 Tim 2:14, Hos 6:7)
Genesis 3:6 And when the woman saw that the tree was good for food, and that it was pleasant to the eyes, and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
1 Tim 2:14 And Adam was not deceived, but the woman being deceived was in the transgression.
Hos 6:7 But they like men have transgressed the covenant: there have they dealt treacherously against me.
As a result of Adam's disobedience to God's covenant, all problems came to mankind.
First, man turned away from God because of his disobedience. (Genesis 3:7-8, Isaiah 59:2, Romans 3:23)
Genesis 3:7 And the eyes of them both were opened, and they knew that they were naked; and they sewed fig leaves together, and made themselves aprons. 8 And they heard the voice of the Lord God walking in the garden in the cool of the day: and Adam and his wife hid themselves from the presence of the Lord God amongst the trees of the garden.
Isaiah 59:2 But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.
Romans 3:23 For all have sinned, and come short of the glory of God;
Second, man was subject to all curses. (Genesis 3:17-19)
Genesis 3:17 And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; 18 Thorns also and thistles shall it bring forth to thee; and thou shalt eat the herb of the field; 19 In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.
Third, and all human beings have come to live as slaves to Satan. (John 8:44)
John 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
Fourth, and all human beings met physical death and eternal death. (Romans 6:23)
Romans 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.