Augustine of Hippo
Catena Aurea · Johannesevangelium 14
Judas saith unto him, not Iscariot, Lord, how is it that thou wilt manifest thyself unto us, and not unto the world? Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him. He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father’s which sent me. These things have I spoken unto you, being yet present with you. But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you. Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you.
(Tract. lxxvi. 4) But while the Father and the Son make Their abode with the loving soul, is the Holy Spirit excluded? What meaneth that which is said of the Holy Spirit above: He dwelleth with you, and shall be in you, but that the Spirit makes His abode with us? Unless indeed a man be so absurd as to think that when the Father and the Son come, the Holy Spirit departs, as if to give place to His superiors. Yet even this carnal thought is met by Scripture, in that it says, Abide with you for ever. (v.16) He will therefore be in the same abode with Them for ever. As He did not come without Them, so neither They without Him. As a consequence of the Trinity, acts are sometimes attributed to single persons in it: but the substance of the same Trinity demands, that in such acts the presence of the other Persons also be implied.