Augustine of Hippo
Catena Aurea · Matthäusevangelium 19
Then answered Peter and said unto him, Behold, we have forsaken all, and followed thee; what shall we have therefore? And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel. And every one that hath forsaken houses, or brethren, or sisters, or father, or mother, or wife, or children, or lands, for my name’s sake, shall receive an hundred fold, and shall inherit everlasting life. But many that are first shall be last; and the last shall be first.
(de Civ. Dei, xx. 5.) The same holds good, by reason of this number twelve, of those that are to be judged. For when it is said, Judging the twelve tribes, yet is not the tribe of Levi, which is the thirteenth, to be exempt from being judged by them; nor shall they judge this nation alone, and not also other nations.