idiot, fool
—He couldn’t even find his way home from the bus station. What a nimrod!

Noah had three sons named Shem, Ham, and Japheth. The Bible contains lists of their descendants, including Cush, a son of Ham:

Cush was the father of Nimrod; he began to be a valiant warrior on the earth. He was a mighty hunter before the Lord. (That is why it is said, “Like Nimrod, a mighty hunter before the Lord.”)

In English, nimrod first meant “hunter,” but now most people don’t remember its positive meaning and it is more often used as an insult.

a sign of peace
—Their fighting has continued for years, without anyone willing to offer the other side an olive branch.

Adam and Eve’s family increased, and over the years, as the number of people grew, their sins also increased. Because of the wickedness of mankind, God decided to flood the earth and destroy all people—except for the righteous man Noah, and his family. God told Noah to build an ark, in which God put pairs of very kind of animal so that they, too, would survive the flood. It rained for 40 days and 40 nights, with the water covering the earth for 150 days. When the water began to recede, the ark rested on a mountain, and Noah sent out a dove to see if it could find a place to land. It did not, and returned to him. Then after seven days, he released the dove again:

When the dove returned to him in the evening, there was a freshly plucked olive leaf in its beak! Noah knew that the waters had receded from the earth. (Genesis 8:11)

The flood was over, and those in the ark soon were able to return to dry ground. This is where we get the symbol of a dove carrying an olive branch as a sign of peace. Today, we call a person who supports peace a dove (or “peace dove“), while a hawk (or “war hawk”) is someone who calls for war.

I’m not responsible for someone else
—When I asked Roger if he knew why his roommate was late to class, he answered, “Don’t ask me. Am I my brother’s keeper?” 

After leaving the Garden of Eden, Eve had two sons, named Cain and Abel. One day the brothers presented offerings to God. While God accepted Abel’s offering, he did not accept Cain’s. Cain then became angry and violent:

Cain said to his Abel, “Let’s go out to the field.” While they were in the field, Cain attacked his brother and killed him.

Then the Lord said to Cain, “Where is your brother Abel?” And he replied, “I don’t know! Am I my brother’s guardian? [Am I my brother’s keeper?—KJV]” But the Lord said, “What have you done? The voice of your brother’s blood is crying out to me from the ground! So now, you are banished from the ground, which has opened its mouth to receive your brother’s blood from your hand. When you try to cultivate the ground it will no longer yield its best for you. You will be a homeless wanderer on the earth.”

. . . .

So Cain went out from the presence of the Lord and lived in the land of Nod, east of Eden. (Genesis 4:8-12,16)

When Cain asked, “Am I my brother’s keeper?” he already believed he was not responsible for Abel. This is how the phrase is most often used now, along with simply saying, “I am not my brother’s keeper.”

To raise Cain means “to cause a disturbance” or “to lose one’s temper,” as if the person has called up the spirit of Cain.

Jonathan Swift was the first to use “Land of Nod” in print as a pun for “sleep”—for nodding one’s head while falling asleep or “nodding off”—in A Complete Collection of Genteel and Ingenious Conversation  (1738). In the Genesis story, Nod is a Hebrew word meaning “wandering.”

something used in an attempt, often inadequate, to hide embarrassment or shame
—The pitcher lost the game, 10-3, but his home run in the ninth inning provided him a fig leaf of sorts.

Satan came in the form of a serpent and visited Adam and Eve while they were living in the Garden of Eden. He tempted Eve to eat the fruit of the tree of the knowledge of good and evil. She ate it, and gave some to Adam, who ate it also, causing them to lose their innocence:

When the woman saw that the tree produced fruit that was good for food, was attractive to the eye, and was desirable for making one wise, she took some of its fruit and ate it. She also gave some of it to her husband who was with her, and he ate it. Then the eyes of both of them opened, and they knew they were naked; so they sewed fig leaves together and made coverings for themselves. (Genesis 3:6,7)

Following this disobedience, Adam and Eve tried to hide their nakedness by making clothing from fig leaves, and then they tried to hid from God. But God knew what they had done. Because of their sin, he expelled them from the Garden of Eden forever.

something that becomes more appealing because it is immoral or not permitted
—Laura knew that dating a coworker was not allowed, but that meant that Alan was forbidden fruit and she wanted to be with him even more.

After God created man and woman, Eve joined Adam in the special garden God had made:

The Lord God planted an orchard in the east, in Eden; and there he placed the man he had formed. The Lord God made all kinds of trees grow from the soil, every tree that was pleasing to look at and good for food. (Now the tree of life and the tree of the knowledge of good and evil were in the middle of the orchard.) . . .

The Lord God took the man and placed him in the orchard in Eden [garden of Eden—KJV] to care for it and to maintain it. Then the Lord God commanded the man, “You may freely eat fruit from every tree of the orchard, but you must not eat from the tree of the knowledge of good and evil, for when you eat from it you will surely die.” (Genesis 2:8,9,15-17)

The Garden of Eden was a wonderful place, a paradise. Today, a beautiful, unspoiled, peaceful place or situation can be called “Eden” or “Edenic.”

The phrase forbidden fruit tastes the sweetest means that “when a person knows he should not do something, he wants to do it even more.”

In the Book of Proverbs we read about “wisdom” and “folly,” which are like two women who call out to those who pass by. Folly is a foolish woman who sits in her doorway, trying to lure people into her home, saying,

Stolen waters are sweet,
and food obtained in secret is pleasant! (Proverbs 9:17)

The forbidden fruit that Adam and Eve ate is often thought to have been an apple (though the Bible doesn’t say what kind of fruit it was). There is a story—not from the Bible—that says that the piece of fruit Adam ate got stuck as he swallowed it. Therefore, the bump on a person’s throat—it sticks out farther on men—is called an Adam’s apple.

mouth-to-mouth resuscitation
—The lifeguard saved the boy by giving him the breath of life.

Mouth-to-mouth resuscitation is the act of blowing air into the mouth of a person who has stopped breathing in order to revive him. It is called the “breath of life,” in reference to God’s creation of the first man:

The Lord God formed the man from the soil of the ground and breathed into his nostrils the breath of life, and the man became a living being. (Genesis 2:7)

This man was named Adam, and God followed this by creating the first woman, named Eve. God said,

It is not good for the man to be alone. I will make a companion for him who corresponds to him [make him an help meet for him—KJV]. (Genesis 2:18)

In the King James Bible, Eve is called a “help meet for” Adam. Here, meet has the older meaning of “suitable.” But over time, help meet came to be treated together as a noun, with mate, another term for a spouse, later replacing meet. Today, helpmate means “a helper, companion, or spouse.”

You might hear someone say, “I don’t know him from Adam.” To not know someone from Adam means “to be unable to recognize a person or to think of someone as a complete stranger.” This is because if you can’t even tell whether or not someone is Adam, then you don’t know that person at all.

beginning; origin; source
—The short story she wrote became the genesis for a later novel.

The first book in the Bible is named “Genesis.” It begins with the words

In the beginning God created the heavens and the earth.

Now the earth was without shape and empty, and darkness was over the surface of the watery deep, but the Spirit of God was moving over the surface of the water. God said, “Let there be light.” And there was light! (Genesis 1:1-3)

The word genesis comes from a Greek word meaning “beginning, source, or generation.” It was first used as the title of the Bible’s first book when the Old Testament was translated into Latin. (The Bible is divided into two main sections, the Old and New Testaments, with testament meaning “covenant” or “agreement.”)

The first chapter of Genesis tells about God’s creation, including plants, animals, and, finally, the first man and woman:

God created humankind in his own image,
in the image of God he created them,
male and female he created them.

God blessed them and said to them, “Be fruitful and multiply! Fill the earth and subdue it! Rule over the fish of the sea and the birds of the air and every creature that moves on the ground.” (Genesis 1:27, 28)

Be fruitful and multiply is a well-known phrase that simply means “to have children or offspring.”