Am curious how you would respond.
Mormon friend’s argument:
“And he gave some, Apostles; and some, prophets; and some, evangelists; and some, pastors and teachers; for the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ: till we all come in the unity of the faith,”
So, how long are there going to be Apostles, prophets, etc? “till we all come in the unity of the faith”. As long as there is not a “unity of the faith” (and there still isn’t) there need to be Apostles and prophets. But the Catholic Church has neither.
(As an aside, it might be worth pointing out that as Catholics we do not believe that Bishops = Apostles. At least, that seems to be the point made in Jimmy Akin’s This Rock article.)