Zacarias 14

Zacarias 14:5-6

Yet learn that the Son knows the day of judgment. We read in Zechariah: "And the Lord my God shall come, and all the saints with him. In that day there shall not be light but cold and frost, and it shall be one day, and that day is known to the Lord." This day, then, was known unto the Lord, who shall come with his saints to enlighten us by his second advent. But let us continue the point that we have commenced concerning the Spirit: "He shall glorify me." So then the Spirit glorifies the Son, as the Father also glorifies him, but the Son of God also glorifies the Spirit, as we said. He then is not weak who is the cause of the mutual glory through the unity of the eternal light, nor is he inferior to the Spirit, of whom this is true that he is glorified by the Spirit. — On the Holy Spirit 2.11.119-20