The sun shall not smite thee by day, nor the moon by night.
The sun shall not smite thee by day - with heat.
Nor the moon by night - with cold. The moon, as 'ruling the night' (Genesis 1:16), has all the influences associated with night attributed to it. Compare the words of Jacob, to whom Psalms 121:4-5 allude (Genesis 31:40; Jeremiah 36:30). Moreover, the moon has a most hurtful effect on those who sleep under its beams. Day or night, no real and lasting hurt shall befall God's people.