What is the first original sin committed by Adam according to the bible?

Answer 1

I guess it was the "not listening to God" since he told them not to eat (although his significant other was the one to make him, but that doesn't make it less bad)

Answer:

"Sin" is the "breaking of the Ten Commandments" [see I John 3:4 & Rom.7:7].

Therefore, the original transgression Adam and Eve committed was: "Thou shalt have no other gods before Me."

They chose to heed and obey "that old Serpent," ["...called the Devil, and Satan, which deceiveth the whole world..." - Rev.12:9] -- as their "master," thereby "worshiping" him and becoming his servants.

"Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?" (Rom.6:16)

ANSWER

The first original sin involved more than just eating a piece of fruit after being told not to. By eating from the tree of knowledge of good and bad Adam and Eve were asserting their independence from God. Instead of simply obeying God they would decide what is good and what is bad and act accordingly. Take for example the fact that after eating the fruit they realized they were naked and became ashamed. Why? They were naked the whole time before now after eating the fruit they feel ashamed of being naked. The fact is there is nothing wrong with nudity or God would of clothed both of them after they were created. Jeremiah 10:22 states it does not belong to man who is walking to even direct his step.

Answer 2

The first sin of the humans is called ORIGINAL SIN.

Answer 3

Ate forbidden apple from tree of knowledge when told not to