N.J. Const. art. XI, § 4, ¶ 1

Subsequent to the adoption of this Constitution the Governor shall nominate and appoint, with the advice and consent of the Senate, a Chief Justice and six Associate Justices of the new Supreme Court from among the persons then being the Chancellor, the Chief Justice and Associate Justices of the old Supreme Court, the Vice Chancellors and Circuit Court Judges. The remaining judicial officers enumerated and such Judges of the Court of Errors and Appeals as have been admitted to the practice of law in this State for at least ten years, and are in office on the adoption of the Constitution, shall constitute the Judges of the Superior Court. The Justices of the new Supreme Court and the Judges of the Superior Court so designated shall hold office each for the period of his term which remains unexpired at the time the Constitution is adopted; and if reappointed he shall hold office during good behavior. No Justice of the new Supreme Court or Judge of the Superior Court shall hold his office after attaining the age of seventy years, except, however, that such Justice or Judge may complete the period of his term which remains unexpired at the time the Constitution is adopted.