The Comforter, the Holy Spirit, who fills the whole universe, passes through all believing, meek, humble, good, and simple human souls, dwelling in them, vivifying and strengthening them.
He becomes one spirit with them and everything to them – light, strength, peace, joy, success in their undertakings, especially in a pious life, and everything good – “going through all understanding, pure and most subtle spirits” (Wisdom of Solomon 7: 23). “We have been all made to drink into one Spirit” (I Cor. 12:13). All pious people are filled with the Spirit of God similarly as a sponge is filled with water.
St. John of Kronstadt