They were to be (or serve: והיוּ after an imperative has the force of a command) - ( a) for signs (sc., for the earth), partly as portents of extraordinary events (Mat 2:2; Luk 21:25) and divine judgments (Joe 2:30; Jer 10:2; Mat 24:29), partly as showing the different quarters of the heavens, and as prognosticating the changes in the weather; - ( b) for seasons, or for fixed, definite times (מועדים, from יעד to fix, establish), - not for festal seasons merely, but “to regulate definite points and periods of time, by virtue of their periodical influence upon agriculture, navigation, and other human occupations, as well as upon the course of human, animal, and vegetable life (e.g., the breeding time of animals, and the migrations of birds, Jer 8:7, etc.); - ( c) for days and years, i.e., for the division and calculation of days and years. The grammatical construction will not allow the clause to be rendered as a Hendiadys, viz., “as signs for definite times and for days and years,” or as signs both for the times and also for days and years. (3) They were to serve as lamps upon the earth, i.e., to pour out their light, which is indispensable to the growth and health of every creature. That this, the primary object of the lights, should be mentioned last, is correctly explained by Delitzsch: “From the astrological and chronological utility of the heavenly bodies, the record ascends to their universal utility which arises from the necessity of light for the growth and continuance of everything earthly.” This applies especially to the two great lights which were created by God and placed in the firmament; the greater to rule the day, the lesser to rule the night. “ The great” and “ the small” in correlative clauses are to be understood as used comparatively (cf. Gesenius, §119, 1). That the sun and moon were intended, was too obvious to need to be specially mentioned. It might appear strange, however, that these lights should not receive names from God, like the works of the first three days. This cannot be attributed to forgetfulness on the part of the author, as Tuch supposes. As a rule, the names were given by God only to the greater sections into which the universe was divided, and not to individual bodies (either plants or animals). The man and the woman are the only exceptions (Gen 5:2). The sun and moon are called great, not in comparison with the earth, but in contrast with the stars, according to the amount of light which shines from them upon the earth and determines their
