Gregory the Dialogist

Therefore that person truly touches Jesus who believes the Son to be coeternal with the Father. For in the heart of Paul, Jesus had already ascended to the Father when the same Paul was saying: "Who, being in the form of God, did not consider it robbery to be equal to God." Hence John also touched our Redeemer with the hand of faith, who says: "In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things were made through him." Therefore that person touches the Lord who believes him equal to the Father in eternity of substance.