Discovery BoxJoel 2:10 
Context2:10 The earth quakes 1 before them; 2
the sky reverberates. 3
The sun and the moon grow dark;
the stars refuse to shine. 4
Joel 2:31
Context2:31 The sunlight will be turned to darkness
and the moon to the color of blood, 5
before the day of the Lord comes –
that great and terrible day!
1 sn Witnesses of locust invasions have described the visual effect of large numbers of these creatures crawling over one another on the ground. At such times the ground is said to appear to be in motion, creating a dizzying effect on some observers. The reference in v. 10 to the darkening of the sun and moon probably has to do with the obscuring of visibility due to large numbers of locusts swarming in the sky.
2 tn Heb “before it.”
3 tn Heb “trembles.”
4 tn Heb “gather their brightness.”
5 tn Heb “to blood,” but no doubt this is intended to indicate by metonymy the color of blood rather than the substance itself. The blood red color suggests a visual impression here – something that could be caused by fires, volcanic dust, sandstorms, or other atmospheric phenomena.
