All Christians accept the statement of Paul that "the gift of God is eternal life," albeit the most devout believers have known the difficulties of "earning a living.
All persons who are doing the world's work are engaged in enterprises which supply in one way or another the needs of their fellow men, and in return for their labors a just wage is supposed to meet their need.
In the second Epistle to Timothy we read: "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: that the man of God may be perfect.