Gregory the Great
Catena Aurea · Matthäusevangelium 16
For what is a man profited, if he shall gain the whole world, and lose his own soul? or what shall a man give in exchange for his soul? For the Son of man shall come in the glory of his Father with his angels; and then he shall reward every man according to his works. Verily I say unto you. There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom.
(Hom. in Ev. xxxii. 4.) Or the connexion may be thus; The Holy Church has a period of persecution, and a period of peace; and our Redeemer accordingly distinguishes between these periods in His commands; in time of persecution the life is to be laid down; but in time of peace, those earthly lusts which might gain too great power over us are to be broken through; whence He says, What does it profit a man?