But you, brethren, are not in darkness, that that day should overtake you as a thief.
All Commentaries on 1 Thessalonians 5:4 Go To 1 Thessalonians 5
Augustine of Hippo
AD 430
On the verse: “This is the day which the Lord has made.” What we have sung to our Lord let us put into practice with his help. To be sure, every day has been made by the Lord, but with good reason has it been said of a particular day, “This is the day which the Lord has made.” We read that when he created heaven and earth, “God said, ‘Let there be light,’ and there was light, and God called the light Day, and the darkness Night.” But there is another day, well established and definitely to be commended by us, concerning which the apostle says, “Let us walk becomingly as in the day.” That day, commonly called “today,” is caused by the rising and setting of the sun. There is still another day by which the word of God shines on the hearts of the faithful and dispels the darkness, not of the eyes, but of evil habits. Let us, therefore, recognize this light; let us rejoice in it; let us pay attention to the apostle when he says, “For we are children of the light and children of the day. We are not of night nor of darkness.”