Rabbi Berekhya began in the name of Rabbi Yehuda bar Simon: “By the word of the Lord the heavens were made” (Psalms 33:6). Rabbi Yehuda bar Simon said: It was not with toil and not with exertion that the Holy One blessed be He created His world, but rather, “by the word of God,” and the heavens were already made. Here, too, “and there was [vehaya] light”2Indicating that the light came into existence gradually. is not written here, but rather, “vayhi light” – it immediately came about.
Rabbi Shimon bar Yoḥai began: “There is joy for a man in the pronouncement of his mouth, and how good is a word at its time” (Proverbs 15:23). “Joy for a man [ish]” – this is the Holy One blessed be He, as it is stated: “The Lord is a warrior [ish milḥama]; the Lord is His name” (Exodus 15:3). “In the pronouncement of his mouth” – “the Lord said: Let there be light.” “And how good is a word at its time” – “God saw the light, that it was good” (Genesis 1:4).