When God placed the first man in the garden, He created a unilateral agreement with him which granted much freedom and one restriction.  God’s duty was to continue to supply an abundance of food.  The man’s duty was to enjoy those foods with an abundant life as a consequence, and to avoid the restricted one on penalty of death.  One name we give this agreement is the Covenant of Works, the first of several covenants that define man’s relationship with God.  We now know that the man didn’t keep his part.  The result was tragic, for himself and for the whole human race that descended from him.