Psalms 136:9

The moon and stars to rule by night,.... The lesser lights, and which indeed receive all their light Front the sun, Genesis 1:16;

for his mercy [endureth] for ever; in continuing these lights, so useful to men, as well as in making of them: the moon and stars have their benign influences upon the earth, to produce things out of it useful to men; see Deuteronomy 33:14; and are of singular service to benighted travellers, and to those that go down to the sea in ships; see Acts 27:20. The moon is an emblem of the church, that receives her light from Christ, the sun, and which will continue for ever; and, stars are emblems of Gospel ministers, who are the means of enlightening dark souls, and of refreshing disconsolate saints; and are a continued mercy to an ignorant world, as well as to the church, and will be continued as long as it stands; see Song of Solomon 6:10 Matthew 5:14.