Christ is The Law, whether Scripture says it or not, that's immaterial, don't you think ?
Please, think
___________
True, 'the crowd' could have been speaking of OT of Isaiah, or, somewhere, where Christ is prophesied to change a coming nation.
Christ, indeed, swallowed up the Mosaic Law, He became 'it,' those laws became 'obsolete,' 'no longer needed,' because Christ following of his followers, commanded to 'love Him with all their heart, mind, body, soul,' and, 'love thy neighbor as thyself,' are what ALL the other commandments hinge on. I think this would be easy to see what I'm saying but, maybe, not, nilE.