The anonymous author of the Letter to the Hebrews writes to us about human beings as children of God: Since therefore the children share in flesh and blood, he [Jesus] himself likewise partook of the same things, that through death he might destroy the one who has the power of death, that is, the devil, and deliver all those who through fear of death were subject to lifelong slavery (Hebrews 2:14-15, English Standard Version).
God created Adam and Eve, and the rest of us human beings through them, as his children and with physical bodies. Having physical bodies meant that God created us with a definitive physical limitation: death. His original intention, however, was to graciously and continuously respond to this limitation by enabling us to eat of the tree of life.