
Augustine of Hippo
Catena Aurea · Matthäusevangelium 6
And when thou prayest, thou shalt not be as the hypocrites are; for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward. But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.
(ubi sup.) The door then must be shut, that is, we must resist the bodily sense, that we may address our Father in such spiritual prayer as is made in the inmost spirit, where we pray to Him truly in secret.