In Genesis 3, our first parents fell from their state of innocency by choosing to doubt God's word and willfully disobeying His command, thereby plunging all of humanity into a state of sin and misery. This tragic act necessitated their banishment from the garden, but it also pointed forward to the promise of a Redeemer who would crush the head of the serpent.
The fall was not an accident but a willful act of rebellion where Adam and Eve, being left to the freedom of their own will, chose to believe the serpent’s lie rather than trust the clear command of God. As recorded in Genesis 3:6, they doubted God's goodness and sufficiency, turning from their Creator to pursue autonomy. This act of disobedience broke their covenantal relationship with God, resulting in the loss of their original righteousness and the introduction of spiritual and physical death. As noted in 1689 LBCF Ch.6 §1, our first parents fell by eating the forbidden fruit, which resulted in the corruption of their whole nature and the ruin of all their posterity.
The immediate consequences were alienation from God and the curse upon the earth, as the man and woman hid themselves in shame (Genesis 3:23-24). Yet, even in the midst of this judgment, God revealed the first promise of the gospel. In Genesis 3:15, God declared that the seed of the woman would ultimately crush the serpent’s head. This points us beyond our failure to the work of Jesus Christ, the true Seed, who took our curse upon Himself to restore what was lost. We are more flawed than we dared believe, but we are loved and accepted in Christ far more than we ever dared hope.