Tertullian

These things I cannot ask from any but the God from whom I know I shall obtain them, both because He alone bestows them and because I have claims upon Him for their gift, as being a servant of His, rendering homage to Him alone, persecuted for His doctrine, offering to Him, at His own requirement, that costly and noble sacrifice of prayer despatched from the chaste body, an unstained soul, a sanctified spirit, not the few grains of incense a farthing buys -tears of an Arabian tree,-not a few drops of wine,-not the blood of some worthless ox to which death is a relief, and, in addition to other offensive things, a polluted conscience, so that one wonders, when your victims are examined by these vile priests, why the examination is not rather of the sacrificers than the sacrifices.