Genesis 2:17 in the King James Version
But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.
Context
16 The LORD God commanded the man, saying, “You may freely eat of every tree of the garden;
17 but you shall not eat of the tree of the knowledge of good and evil; for in the day that you eat of it, you will surely die.”
18 The LORD God said, “It is not good for the man to be alone. I will make him a helper comparable to him.”