But the gift of God through Christ is a very different matter from the “account rendered” through the sin of Adam. For while as a result of one man’s sin death by natural consequence became the common lot of men, it was by the generosity of God, the free giving of the grace of one man Jesus Christ, that the love of God overflowed for the benefit of all men. (Romans 5:15)
You see, it was the reintroduction, as a gift, of all that Adam was meant to be and receive -- all that he had lost as a consequence of the Fall -- that Jesus came to re-invite us into:
Rather than continuing the generational, earthly curse of sin and death, Jesus came to reinstitute our showcasing the full glory of God within the earthly life of man.
Rather than settling for our broken family systems and human-centered understandings of the past and the present, Jesus came to invite us into the Family of God.
Rather than being ruled over by creation -- being defined ourselves by the economies of this world, the evil one, sin, death -- Jesus came (as the new-firstborn, perfectly chosen Son of God) to restart the whole process between God and man.
And, finally, rather than walking in broken, disconnected misunderstanding, disobedience, and imperfect not-doing of the will of the Father, Jesus came to teach us how to walk with God again, just like He'd Himself once walked in Eden with that unFallen first man named Adam.