Charles Ellicott Commentary 1 Thessalonians 5:1

"But concerning the times and the seasons, brethren, ye have no need that aught be written unto you." — 1 Thessalonians 5:1 (ASV)

But of the times.—The fourth subject of instruction; the bearing of the doctrine of the Advent upon the Christian’s own life. Times and seasons is a Hebraism, and in the original, the second word, not the first, is the more explicit: we should say, “About day and hour.” The plural seems to mean the different periods at which people might conceive the Advent likely to come.

You have no need.—The next verse shows that this paragraph is not so much intended for an answer to a false theory about the time of the Advent, as to practically cure the restlessness common at Thessalonica.