[53] we must do good works, hastening with all speed, and labouring to outstrip others, casting away all slowness and delay. And the best of all good works is the pleasing the first good without any postponement of energy, on which account it is also enjoined, "If thou vowest a vow, thou shalt not delay to perform it." [45] A vow now is a request for good things addressed to God, and the injunction is, that when one has attained the object of one’s hopes, one must offer offerings of gratitude to God, and not to one’s self, and to offer them if possible without any loss of time, and without any delay;