Texas Constitution: No Religious Test - Except This One

Texas Constitution.

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Article 1, Section 4.

RELIGIOUS TESTS. No religious test shall ever be required as a qualification to any office, or public trust, in this State; nor shall any one be excluded from holding office on account of his religious sentiments, provided he acknowledge the existence of a Supreme Being.

Full constitution:

http://www.statutes.legis.state.tx.us/SOTWDocs/CN/htm/CN.1.htm