Halakhah for Genesis 1:5

I will now examine Creation, and I will begin to respond to the one who says that the night follows the day. If this were so, why did Scripture not state explicitly “from dawn to dawn is one day?” Or “from light to dawn?” Why did it interrupt with “it was dusk” (Genesis 1:5)? From the verse “it was dusk and it was dawn” it seems that from dusk until dawn is one day, contrary to what is stated earlier, “God called light ‘day’” (ibid.).

Now the darkness proceeded the light, as it is written (Genesis 1:2). The great movement (diurnal movement) includes the time of darkness and light, and that is called “yom” (day), that is, a complete day of twenty-four hours.¹⁸ Thus “day” includes a period of darkness and a period of light, in that order. This does not conflict with the fact that Scripture first mentioned “God called the light ‘day’” (Genesis 1:5) before the night, for this is common with the Hebrew language, namely, when someone mentions two things he should begin with the latter.¹⁹ Verses 3 and 4 refer to the light, therefore verse 5 begins by calling the light “day.” For example, “I gave Jacob and Esau to Isaac, and I gave to Esau…” (Joshua 24:4). In the same way, “Your’s is the day also the night” (Psalms 74:16), and he mentions the minor luminary (the moon) that governs the night before the greater luminary (the sun), although the latter is more important than the former. Also, do not be perplexed when Scripture says “He formed the light and created darkness” (Isaiah 40:12). Scripture puts the light first because it has advantages over darkness, even though darkness came before the light. Similarly, in the verse “His sons Isaac and Ishmael” (Genesis 25:9).²⁰ Isaac is mentioned first, even though he was the younger son. Also, “There they buried Abraham and Sarah his wife” (ibid. 49:31), although he buried her.²¹ Abraham is mentioned first although Sarah was buried first.

Because Scripture mentioned “God called the light ‘yom’ (day)”, it needed to tell us how one should count a day of the Torah. For the word “yom” has two meanings (a period of daylight, 12 hours, and a 24-hour period). Therefore it says that these two beginnings, namely dusk and dawn, encompass the Torah’s day. For ‘erev (dusk) refers to the time when shapes merge and are not distinguishable to the eye, as in the verse “They intermingled (vayit’arvu) among the nations” (Psalms 106:35). Boker (dawn) is the time when the forms are distinguishable and are recognizable and examinable, as in the verses “the priest need not examine (yevaqqer)” (Leviticus 13:36), “As a shepherd (vaqqarat) tends his flock” (Ezekiel 34:12). The term yom (day) encompasses both these times, for a single motion includes both. Similarly we find “He created male and female…and called their name ‘Adam’” (Genesis 5:2), while it is also written “And [the Lord, God,] made for Adam and his wife garments of hide and He dressed them” (ibid. 3:21).²² We see that the name “Adam” has a double meaning, sometimes referring to the entire human species, both male and female, and sometimes only to the male (or a specific male). Again it is clear from the description of Creation that a day is from evening to evening.