John Trapp on Psalms 136:7

Verſ. 7 To him that made great lights] Without which wee ſhould have no more comfort of the air wee breath on than the Egyptians had in that three-dayes darkneſs. Now the Sun and Moon are called great Luminaries, not great ſtars or bodies (for the Sun is leſs than ſome ſtars, and the Moon is leaſt of all) firſt, for the excellency of light which theſe two do more abundantly impart to the earth, and ſecondly, for the effects they work; the Sun by his acceſs making all green and flouriſhing, and the contrary by his receſs the Moon by his various aſpect cauſing humors and marrows to increaſe or decreaſe &c.