Freedom of simplicity- Finding Harmony in a Complex World by Richard J. Foster
"If the first insight into simplicity that we receive from the Old Testament is radical dependence, the second is radical obedience. Perhaps nowhere is the more graphically seen that when Abraham was called upon to surrender his most priceless treasure-his son Issac. God spoke; Abraham obeyed. No contingency plans, no skirting around the issue, no ifs ands or buts. Through a long painful process Abraham's life had been honed down to one truth- obedience to the voice of Yahweh. This "holy obedience" forms the grid through which the life of simplicity flows."