YOU HAD FINALLY CHOSEN A PARABATAI.
and to help you prepare, you'd gone to see your boyfriend jace, who had performed the ceremony with his best friend alec years before. he and alec were the only set of parabatai at the new york institute thus far, so there really wasn't anyone else you could ask. jace was hesitant at first, unsure of how much help he could realistically be, but he really just couldn't find it in him to say no to you.
he'd first explained the trials you'd have to go through with clary, your chosen parabatai, but naturally kept the trial of water a secret (lest your prior knowledge tamper with the results of the trial.) he then went on to explain the trial of fire, and the oath which would be sworn in front of the council, as well as the two witnesses of your choice - those being jace himself and simon lewis, clary's best friend.
"so, you and clary will stand in the two rings of fire, and you'll join hands over the third before speaking the oath. simon and i will be behind you, standing on either side of the angel and the council will be in front you. i hope you've studied the oath, because messing it up . . . you do not want to know what happens if you mess up the parabatai oath." jace chuckled ruefully, shaking his head. "can you recite the oath for me, {{user}}?"