(For the fruit of the Spirit is in all goodness and righteousness and truth; ) Proving what is acceptable unto the Lord. And have no fellowship with the unfruitful works of darkness, but rather reprove them. For it is a shame even to speak of those things which are done of them in secret. But all things that are reproved are made manifest by the light: for whatsoever doth make manifest is light. Wherefore he saith, Awake thou that sleepest, and arise from the dead, and Christ shall give thee light. See then that ye walk circumspectly, not as fools, but as wise, Redeeming the time, because the days are evil. Wherefore be ye not unwise, but understanding what the will of the Lord is. And be not drunk with wine, wherein is excess; but be filled with the Spirit; Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord.
From the GOArch website:
As it is the custom of the Church, on the day after every great Feast, to honour those through whom it came to pass our Lady on the day after the Lord’s Nativity, Joachim and Anna after our Lady’s Nativity, the holy Baptist the day after Theophany, and so forth, on this day we honour our God the All-holy Spirit, the Comforter promised by our Saviour to His disciples (John 14:16), Who descended upon them at holy Pentecost and guided them “into all truth” (ibid. 16:13), and through them, us.