Spiritual reading in Advent has included the Book of Isaiah (mostly finished), Quakers George Fox and Isaac Pennington, and now sermons of John Tauler, a 14th century German mystic. His description of the Trinity caught my attention, particularly the part about the Spirit in bold.
The Father, distinct as Father, turns inward to Himself with His divine Intellect and penetrates in clear self-beholding the essential abyss of His eternal Being. In this act of pure self-comprehension He utters Himself completely by a Word; and the Word is His Son. And the act whereby He knows Himself is the generation of the Son in eternity. Thus He rests within Himself in the unity of essence, and He flows out in the distinction of Persons. And so He turns inward, comprehending Himself, and He flows outward in the generation of His Image (that of His Son), which He has known and comprehended. And again He returns to Himself in perfect self-delight. And this delight streams forth as ineffable love, and that ineffable love is the Holy Spirit. Thus God turns inward, goes outward, and returns to Himself again. And these Processions happen for the sake of their return. Hence the celestial orbit is the noblest and most perfect, for it constantly returns to the origin and source from which it emerged.
God’s delight streams out as the Holy Spirit. I love that. And this Holy Delight can fill our spirits if they are prepared to receive it.