1 Timothy 6:5-7

and perpetual friction between men who are corrupted in mind and deprived of the truth, who think that godliness is a source of profit [a lucrative, money-making business—withdraw from them]. But godliness actually is a source of great gain when accompanied by contentment [that contentment which comes from a sense of inner confidence based on the sufficiency of God]. For we have brought nothing into the world, so [it is clear that] we cannot take anything out of it, either.