Be on your guard and stay alert! For you do not know when the appointed time will come.
Berean Standard Bible (BSB)
Watch, keep alert, and pray; for you don’t know when the time is.
World English Bible (WEB)
Take ye heed{G991}{(G5720)}, watch{G69}{(G5720)} and{G2532} pray{G4336}{(G5737)}: for{G1063} ye know{G1492}{(G5758)} not{G3756} when{G4219} the time{G2540} is{G2076}{(G5748)}.
Strong's King James
(33) Watch, be alert because you don't know when the time is.
The F.O.G
The F.O.G Message
Take heed, watch and pray, for ye have not known when the time is;
Young's Literal Translation