N.J. Stat. § 18A:24-76
No bond resolution, no municipal ordinance for guaranty, and no contract, agreement, arrangement or other act of the issuing board, of any municipality or of any governmental office, officer or agency shall be modified, altered, revoked, added to or otherwise changed in any respect that would tend to adversely affect the interest or right of the holder of any bond or bonds issued hereunder. This provision shall be deemed to be a contractual obligation and not subject to modification or repeal so long as any of said bonds are issued, outstanding and unmatured. Nothing in this section shall be construed to prevent the issue and reissue of additional bonds, all of which shall have equal rights in respect to any reserves or sinking funds without any differences in priority among them.
N.J.S. § 18A:24-76