You could start almost anywhere with Simone Weil, Anastasios. Her extremism is seemingly inseparable from her genius, she's one of the most moving & powerful writers I've ever read. There are some essays which are in the form of devotional meditations - I think some are collected in Waiting for God. Also the very curious tract The Need for Roots deals with this question of an inherent thirst for God, in the context of a kind of neo-medieval social vision. My favorite works are the 2-vol. Notebooks, a posthumous collection, a grand mish-mash of theological/scientific/philosophical/gnostic/aesthetic notes & plans for essays, also Intimations of Christianity Among the Ancient Greeks, where her extensive knowledge of mathematics is brought to bear on some very beautiful theological speculations.
Simone Weil was deeply troubled & divided about established religion. Though a devout Catholic on an intellectual level, she refused to participate in the institution of the Church; though Jewish, her notebooks are filled with antagonism toward Old Testament Hebrew religion (she equates the Hebrews with the Romans as forms of totalitarian society). Perhaps there was an element of self-hatred at work. I'm not that familiar with the details of her biography, except that she died in a London hospital during WW 2, exiled from France, essentially of starvation, in solidarity with the French people. She loved the Greeks & she loved France. And she had a compassionate awareness of, and participation in, human suffering, which radiates through everything she wrote (and did).