Bonds in the total amount of nine billion dollars ($9,000,000,000), not including the amount of any refunding bonds issued in accordance with Sections 101140 and 101149, or so much thereof as is necessary, may be issued and sold for the purposes set forth in Sections 101130 and 101144. The bonds, when sold, shall be and constitute a valid and binding obligation of the State of California, and the full
faith and credit of the State of California is hereby pledged for the punctual payment of the principal of, and interest on, the bonds as the principal and interest become due and payable.