John White
The Golden Cow , (p. 92-93), Inter-Varsity Press, 1979
… to give up everything for Christ consists of an internal relinquishment of all our possessions … The standard set before us is not that all Christians take a vow of poverty. Some of us will always be richer and others poorer. Yet all of us are to have a contract with Christ that whenever obedience to him means sacrifice of any degree, even to losing everything we have or to facing prison and death, then obedience is what matters. The obedience will be all the easier if we daily relinquish to him all we possess.

Luke 9:23
New International Version
Then he said to them all: “If anyone would come after me, he must deny himself and take up his cross daily and follow me.