Gregory the Great
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.
(Mor. x. 31.) For whosoever, urged by the spur of divine lore, shall forsake what he possesses here, shall without doubt gain there the eminence of judicial authority; and shall appear as judge with the Judge, for that he now in consideration of the judgment chastens himself by a voluntary poverty.