Adam and Eve did die as Yahweh said that they would; they are not alive and walking around on the earth today.
But of the Tree of the Knowledge of Good and Evil you may not eat, for in the day that you eat of it, dying you shall die. — Genesis 2:17, Green’s Literal Translation.
Part of God’s covenant to Adam was that if he disobeyed, then his death process would begin, that he would be dying so that he would die. God spoke the truth. Adam is not alive today.
And the serpent said to the woman, Dying you shall not die, — Genesis 3:4, Green’s Literal Translation.
Adam and Eve died. If they did not die, we should be able to locate them somewhere on the earth today. The fact is that scripture records Adam’s death: “All the days that Adam lived were nine hundred thirty years, then he died.” (Genesis 5:5)
Of course, many believe that Satan has kept his promise to Eve by making it seem to be fulfilled in the all the various forms of immortal soul/spirit doctrines that prevail in practically all parts of the world.
Some believe that the serpent did not speak audibly, but rather by suggestion. However, it is evident from Revelation 12 and John 8:44 that the one who caused the serpent to speak (whether audibly or not) was Satan the devil, the one who as a light [Jesus was probably speaking of what many call “falling stars” — the light from a burning meteoroid] fell from heaven. — Luke 10:18.
One of Satan’s ploys is to mix some truth with a lie. Yes, the serpent, Satan, told the truth concerning their knowing both good and bad; however, he was deceptive in the way he presented this, since he presented as though it should be something to be desired.. Before Adam and Eve only knew the good, and had the prospect of living forever. Eve was convinced this knowledge of bad was something to be desired, something to make her like the elohim.
God, of course, had a knowledge of good and bad intuitively; the angels were beginning to receive the knowledge of the bad through the course of one angel who had become a liar. To what extent Satan had influenced the angels as this time, the Bible does not say. Under the background of speaking to the king of Babylon, Yahweh speaks of this king as having fallen from heaven (Isaiah 14:12), and saying in his heart: “I will ascend into heaven, I will exalt my throne above the stars of God; and I will sit on the mountain of congregation, in the uttermost parts of the north; I will ascend above the heights of the clouds; I will make myself like the Most High.” (Isaiah 14:13,14) The obvious connection to Jesus’ words as recorded in Luke 10:18 should be apparent. Evidently, the one who fell from heaven is being addressed here, as represented in the king of Babylon, as the king of Babylon was performing the works of the one who fell from heaven.