The ability to make a choice is free will. Adam by his own free will violated GODS command to not eat the forbidden fruit. If we humans were created in GODS image and GOD has free will then humans do too. This image cannot be flesh and blood because GOD is not flesh and blood, GOD is spirit and all humans have a spirit and GOD wants the spirits of just men made perfect. Our human spirit is our mind, sometimes called the heart, and all of our intelligence, memories and experiences are of the mind, the human spirit. Job 8:32 The breath of life is the spirit in us that animates the fleshly body to be a soul. When Adam disobeyed GOD then sin entered the world, it did not exist prior to that time. Satan then acquired the dominion GOD had given to Adam previously and now is the god of this world. Christ took that dominion back but has not yet returned to claim it. The human condition of sin, our sinful nature, is not how GOD originally created the first humans, it was acquired by disobeying GOD. Whoever you render yourself a servant to obey is who you will obey and humanity has obeyed their father the Devil and does his works. Our human spirits were defiled. Jesus confirmed this by saying, Mark 7:15-23 what part of us is saved in the day of the Lord Jesus ? 1 Corinthians 5:5 It is our spirits, the spirits of just human beings that are made perfect. Hebrews 12:23 This spiritual defilement can only be healed by the blood of Christ. We partake of the divine nature, the nature of GODS love, and over our lives come out of sin and into righteousness. This process begins at conversion but is completed in the day Jesus returns. Philippians 1:6