The reading is from St. Paul's Letter to the Ephesians 5:8-19

Brethren, walk as children of light (for the fruit of light is found in all that is good and right and true), and try to learn what is pleasing to the Lord. Take no part in the unfruitful works of darkness, but instead expose them. For it is a shame even to speak of the things that they do in secret; but when anything is exposed by the light it becomes visible, for anything that becomes visible is light. Therefore it is said, "Awake, O sleeper, and arise from the dead, and Christ shall give you light." Look carefully then how you walk, not as unwise men but as wise, making the most of the time, because the days are evil. Therefore do not be foolish, but understand what the will of the Lord is. And do not get drunk with wine, for that is debauchery; but be filled with the Spirit, addressing one another in psalms and hymns and spiritual songs, singing and making melody to the Lord with all your heart.