Skeptics point to the fact that Adam lived until he was 930 years old (see Gen. 5:5) and claim that he did not die “the day” he ate the forbidden fruit. Just as physical death occurs when our soul separates from our body, spiritual death occurs when our soul is separated from God. Adam was unique in that when he was created, God breathed His Spirit into him, giving Adam spiritual life—so he could know and relate to His Creator. But Ezek. 18:4 tells us, “The soul that sins shall die.” Because God is so holy that He cannot abide with sin (Psa. 5:4; Hab. 1:13), He withdrew His Holy Spirit from Adam when he disobeyed, and Adam died spiritually at that very moment.
Genesis 2:17 but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die.