Revenue bonds issued under this article shall not be deemed to constitute a debt of the State of Georgia or a pledge of the faith and credit of the state, but such bonds shall be payable from the revenues and funds of the authority as provided for in the resolutions or trust indentures authorizing or securing such bond issues; and the issuance of such revenue bonds shall not directly, indirectly, or contingently obligate the state to levy or to pledge any form of taxation whatsoever therefor or to make any appropriation for the payment thereof; and all such bonds shall contain recitals on their face covering substantially the foregoing provisions of this Code section.