snob - A person with an exaggerated respect for high social position or wealth who seeks to associate with social superiors and dislikes people or activities regarded as lower-class
Victor used to be friends with Pete, but once Victor suddenly became rich, he acted like a snob and refused to associate with Pete.
zealot - A fanatical person who is unyielding in their spiritual or political pursuits.
Juliet went into the hills alone to seek God, even though her friends called her a crazy zealot. She later testified that speaking to God in the storm was a profoundly healing experience.