Show in ascetic exercise that your heart is strengthened. Cleanse your vessel, that you may receive grace more abundantly. For though remission of sins is given equally to all, the communion of the Holy Spirit is bestowed in proportion to each man's faith. If you have labored little, you receive little; but if you have worked much, the reward is great. You are running for yourself; see to your own interest.
St. Cyril of Jerusalem (315-386)