Clement of Alexandria

And again, to him who desires to become a Gnostic, it is written, "But be thou an example of the believers, in word, in conversation, in love, in faith, in purity." For perfection in faith differs, I think, from ordinary faith. And the divine apostle furnishes the rule for the Gnostic in these words, writing as follows: "For I have learned, in whatsoever state I am, to be content. I know both how to be abased, and I know how to abound. Everywhere and in all things I am instructed both to be full and to be hungry, both to abound and to lack. I can do all things through Him who strengtheneth me."