Adam:

Creation: According to Genesis 2:7, Adam was the first human created by God. "Then the LORD God formed a man from the dust of the ground and breathed into his nostrils the breath of life, and the man became a living being."

The Garden of Eden: God placed Adam in the Garden of Eden to work it and take care of it (Genesis 2:15).

The First Command: God commanded Adam not to eat from the tree of the knowledge of good and evil, warning that he would surely die if he did (Genesis 2:16-17).

Companionship: God noticed that it was not good for Adam to be alone and decided to make a helper suitable for him (Genesis 2:18).

Eve:

Creation from Adam: Eve was created from one of Adam's ribs to be his companion (Genesis 2:21-22). "So the LORD God caused the man to fall into a deep sleep; and while he was sleeping, he took one of the man’s ribs and then closed up the place with flesh. Then the LORD God made a woman from the rib he had taken out of the man, and he brought her to the man."

The Serpent's Temptation: Eve was tempted by the serpent to eat the forbidden fruit from the tree of the knowledge of good and evil (Genesis 3:1-6).

The Fall: Eve ate the fruit and gave some to Adam, who also ate it. This act of disobedience is known as the Fall of Man (Genesis 3:6).

Expulsion from Eden: As a result of their disobedience, Adam and Eve were expelled from the Garden of Eden (Genesis 3:23-24).

Cain

Firstborn of Adam and Eve: Cain was the first son of Adam and Eve (Genesis 4:1). "Adam made love to his wife Eve, and she became pregnant and gave birth to Cain. She said, 'With the help of the LORD I have brought forth a man.'"Occupation: He was a tiller of the ground, a farmer (Genesis 4:2). "Later she gave birth to his brother Abel. Now Abel kept flocks, and Cain worked the soil."Offering to God: Cain brought an offering to God from the fruits of the soil (Genesis 4:3). "In the course of time Cain brought some of the fruits of the soil as an offering to the LORD."Murder of Abel: Jealous of God's favor towards Abel's offering, Cain murdered his brother Abel (Genesis 4:8). "Now Cain said to his brother Abel, 'Let’s go out to the field.' While they were in the field, Cain attacked his brother Abel and killed him."Punishment: God cursed Cain to be a restless wanderer on the earth (Genesis 4:11-12). "Now you are under a curse and driven from the ground, which opened its mouth to receive your brother’s blood from your hand. When you work the ground, it will no longer yield its crops for you. You will be a restless wanderer on the earth."

Second Son of Adam and Eve: Abel was the younger brother of Cain (Genesis 4:2).Occupation: Abel was a shepherd, tending flocks (Genesis 4:2).Offering to God: Abel brought an offering from the firstborn of his flock, and God looked with favor on Abel and his offering (Genesis 4:4). "And Abel also brought an offering—fat portions from some of the firstborn of his flock. The LORD looked with favor on Abel and his offering."Murder by Cain: Abel was murdered by his brother Cain out of jealousy (Genesis 4:8).

Third Son of Adam and Eve:
Seth was born after the death of Abel as a replacement and continuation of Adam's line (Genesis 4:25). "Adam made love to his wife again, and she gave birth to a son and named him Seth, saying, 'God has granted me another child in place of Abel, since Cain killed him.'

"Progenitor of a Godly Line: Seth's descendants are noted for their piety and for calling on the name of the Lord (Genesis 4:26). "Seth also had a son, and he named him Enosh. At that time people began to call on the name of the LORD."