‘Forbidden fruit’ is a name given to the fruit growing in the Garden of Eden that which God orders mankind not to eat. In the biblical story, Adam and Eve eat the fruit and are exiled from Eden.
No mention is made of an apple!
In Genesis, God created the first man Adam, and then created the first woman, Eve. God put them in the Garden of Eden to care and look after the land. He told Adam and Eve that they could eat from any fruit from the trees except from the tree of good and evil. God warned them that if they ate from the tree they would die.
One day Satan came disguised as a snake and spoke to Eve, convincing her to eat the fruit from the tree of good and evil. Eve told the serpent that God said they should not eat it and they would die if they did, but Satan tempted Eve to eat saying that she would become like God if she did. Eve believed the lie and took a bite of the fruit. She then gave some to Adam for him to eat.
Adam and Eve, now knowing that they committed a sin felt ashamed and tried to hide from God. God cursed the serpent, the man and the woman drove them out from the Garden and thereby from eternal life.
In Western Europe, the fruit was often depicted as an apple. This was probably because of a misunderstanding of – or a pun on – mălum, a native Latin noun which means evil and mālum, another Latin noun, which means apple.
In the human throat the larynx is noticeably more prominent in males. This prominence became to be called an Adam's apple, from a notion that it was caused by the forbidden fruit getting stuck in Adam's throat as he swallowed it.
“He sustained him in a desert land, in a howling wilderness waste; he shielded him, cared for him, guarded him as the apple of his eye.”
“Guard me as the apple of the eye; hide me in the shadow of your wings.”
“Keep my commandments and live, keep my teachings as the apple of your eye”
“A word fitly spoken is like apples of gold in a setting of silver.”
Song of Solomon 2:3
“As an apple tree among the trees of the wood, so is my beloved among young men. With great delight I sat in his shadow, and his fruit was sweet to my taste.”
Song of Solomon 2:5
“Sustain me with raisins, refresh me with apples; for I am faint with love.”
Song of Solomon 7:8
“I say I will climb the palm tree and lay hold of its branches. O may your breasts be like clusters of the vine, and the scent of your breath like apples.”
Song of Solomon 8:5
“Who is that coming up from the wilderness, leaning upon her beloved? Under the apple tree I awakened you. There your mother was in labour with you; there she who bore you was in labour.”
“The vine withers, the fig tree droops. Pomegranate, palm, and apple— all the trees of the field are dried up; surely, joy withers away among the people.”
“For thus said the Lord of hosts (after his glory sent me) regarding the nations that plundered you: Truly, one who touches you touches the apple of my eye.”