Gregory the Great — as excerpted in the Catena Aurea on John 20:19-25

“(Hom. xxvi.) We must understand that those who first received the Holy Ghost, for innocence of life in themselves, and preaching to a few others, received it openly after the resurrection, that they might profit not a few only, but many. The disciples who were called to such works of humility, to what a height of glory are they led! Lo, not only have they salvation for themselves, but are admitted1 to the powers of the supreme Judgment-seat; so that, in the place of God, they retain some men’s sins, and remit others. Their place in the Church, the Bishops now hold; who receive the authority to bind, when they are admitted to the rank of government. Great the honour, but heavy the burden of the place. It is ill if one who knows not how to govern his own life, shall be judge of another’s.”