Kehillah in Thessalonika I 5:4-6

Orthodox Jewish Bible

⁴ But you, Achim b’Moshiach, are not in choshech that the Yom should overtake you like a ganav.

⁵ For all of you are Bnei Ohr and Bnei Yom; we are not of the Lailah nor of the Choshech.

⁶ Therefore, let us not "sleep" as the rest, but let us keep awake with zililut da’as (sober-mindedness).