Exodus 10:21-23

21Then the LordH3068 saidH559 to MosesH4872, “1ReachH5186 outH5186 with your handH3027 towardH5921 the skyH8064, so that there may be darknessH2822 overH5921 the landH776 of EgyptH4714, even a darknessH2822 2which may be feltH4959.”

22So MosesH4872 reachedH5186 outH5186 with his handH3027 towardH5921 the skyH8064, and there was 3thickH653 darknessH2822 in allH3605 the landH776 of EgyptH4714 for threeH7969 daysH3117.

23They did not seeH7200 oneH376 anotherH251, norH3808 did anyoneH376 riseH6965 from his placeH8478 for threeH7969 daysH3117, 4but allH3605 the sonsH1121 of IsraelH3478 hadH1961 lightH216 in their dwellingsH4186.