ведь она основана на православии, пропитана им.

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Для многих «православный» — это не только религиозный, но и истинно русский человек, представитель русской культуры: ведь она основана на православии, пропитана им.

1. For many people, an orthodox believer is not just a religious person, but also a truly Russian person, a representative of Russian culture ...
I am not sure if I understand it right.
2. ведь она основана на православии, пропитана им.
What does the sentence mean? What does она and им refer to?

http://i.imgur.com/94EyTPh.jpg

Спасибо заранее.

"Она" refers to культура, and "им" - to православие. So a translation may read: "Because (you see), ((the) culture) is based/founded on Orthodoxy, and draped/soaked in it."

because IT она (=the Russian culture) has roots in the Orthodox belief and is inspired by IT им (=the Orthodox belief)