1 Timothy 4:12

There is a fight that is good; a warfare that is eminently laudable. It is lamentable to see how easily men err in deciding what is worthy, what is not worthy to enlist their noblest energies. A question of unspeakable importance; ― for what boots it that you undergo hardships, surmount difficulties, make the most incredible sacrifices, exhibit the most brilliant valor, or the most consummate skill, if the cause in which you have embarked be one not worthy of your energies and sufferings?...