Why is the wisdom tree in the Garden of Eden an apple tree?

Old Testament? Genesis records that there was a "tree of good and evil" in the Garden of Eden, and God forbade Adam and Eve to eat the fruit of this tree. But at the instigation of the snake, Eve ate the forbidden fruit and let Adam eat it, so they had wisdom and the ability to distinguish good from evil. God was angry and drove them out of the Garden of Eden.

The Old Testament does not specify what this "tree of good and evil" is. It was after the ancient Romans accepted Christianity that this tree was clearly called apple tree. This may be because in Latin (the official language of the ancient Roman Empire), the spelling of "apple" and "mistake" is the same as malum, so "apple" has become a pun-Eve did something wrong just because she ate it.

This name was later widely circulated in the west, and Protestantism especially regarded apple as the fruit of wisdom. Newton himself was a devout Protestant. In his later years, he told others that he was inspired by the fall of an apple and discovered the law of gravity. Although it is unknown whether it is true or not, because of Apple's cultural status in Protestantism, this story spread like wildfire, and later it was embellished, saying that Newton was hit by an apple before he realized the law of gravity. Today, the story of "the apple hit Newton" has become one of the most famous legendary anecdotes of scientists in the history of science.