The penalty of death that God promised did come. This was the single biggest change to happen by the introduction of sin.
Adam and Eve did not die immediately after eating the fruit.
Their initial response after eating the fruit was an awareness of their nakedness, personal shame, and an attempt to cover their bodies and hide from God (Gen. 3:7-10). This indicates that their death was immediately spiritual in nature.
However, there was a physical component to the death that came as the penalty for sin.
Next Week: Death