Any member of the senate or of the general assembly may administer the oath of allegiance to his fellow members of the same house.
N.J. Stat. Ann. § 41:2-8
Oath of allegiance of legislators
Current official text: New Jersey Legislature. Digitized from the New Jersey Legislature bulk statutes download. Reproduced from public-domain New Jersey statutes; confirm against the official source for the current text. Not legal advice.