Midrash for Zephaniah 1:3

“Vanity of vanities, said Kohelet; vanity of vanities, everything is vanity” (Ecclesiastes 1:2).
“Vanity of vanities [havel havalim]” – Rabbi Huna said in the name of Rabbi Aḥa: David made a statement and did not explain it, but his son Solomon explained it. Solomon made a statement and did not explain it, but his father David explained it. David said: “Man is like hevel” (Psalms 144:4); to what hevel [is man compared]? If it is to the hevel [heat] of an oven, it has significance. If it is to the hevel of a stove, it has significance. His son Solomon came and explained: “Vanity of vanities [havel havalim], said Kohelet.” Rabbi Shmuel bar Naḥmani taught it in the name of Rabbi Yehoshua ben Korḥa: It is comparable to a person who places seven pots on the fire one atop the other, and the heat of the upper one is insignificant.⁹This comparison is based on the fact that the term vanity [hevel] appears five times in Ecclesiastes 1:2, and twice it appears in the plural, for a total of seven mentions of the term hevel.
Solomon said: “For who knows what is good for man in his life, [all the days of his vain life,] that he spends like a shadow” (Ecclesiastes 6:12). What shadow? If it is like the shadow of a wall, it has substance. If it is like the shadow of a palm tree, it has substance. David came and explained: “His days are like a passing shadow” (Psalms 144:4). Rabbi Huna [said] in the name of Rav Aḥa: Like that bird that passes and its shadow passes with it. Shmuel said: Like the shadow of bees that have no substance at all.
Rabbi Shmuel bar Rav Yitzḥak taught it in the name of Rabbi Shimon ben Elazar: The seven vanities [havalim] that Kohelet mentioned correspond to the seven worlds that a person sees. A one-year-old is like a king who is on a canopied litter and everyone is hugging and kissing him. A two- or three-year-old is like a pig that extends its hands into the sewers. A ten-year-old jumps like a goat. A twenty-year-old whinnies like a horse, beautifies himself and seeks a wife. When he marries a wife he is like a donkey. When he begets children, he is as audacious as a dog to bring [home] bread and food. When he grows old, he is like a monkey. That is stated regarding the common people; however, regarding Torah personalities, it is written: “King David was old” – even though he was old, he was a king.
Rabbi Yehuda ben Rabbi Simon said: The seven vanities that Kohelet mentioned correspond to the seven days of Creation. On the first, “In the beginning God created the heavens and the earth” (Genesis 1:1), and it is written: “For the heavens will vanish like smoke” (Isaiah 51:6). On the second: “Let there be a firmament” (Genesis 1:6), and it is written: “The heavens will be furled like a scroll” (Isaiah 34:4). On the third: “Let the waters be gathered” (Genesis 1:9), and it is written: “The Lord will destroy the tongue of the sea of Egypt” (Isaiah 11:15). On the fourth: “Let there be lights” (Genesis 1:14), and it is written: “The moon will be disgraced” (Isaiah 24:23). On the fifth: “Let the waters swarm [with swarms of living creatures, and let fowl fly above the earth in the open firmament of heaven]” (Genesis 1:20), and it is written: “I will destroy the birds of the heavens” (Zephaniah 1:3). On the sixth: “Let us make man” (Genesis 1:26), and it is written: “I will destroy man and animal” (Zephaniah 1:3). Regarding Shabbat, what do you have to say? “One who profanes it will be put to death” (Exodus 31:14). That is stated regarding one who does so intentionally; but [one who profanes it] unwittingly, he will bring an offering and gain atonement. When Adam saw the praise of Shabbat, that one who brings an offering gains atonement, he began singing in its regard to the Holy One blessed be He, praise and psalm. That is what is written: “A psalm, a song for the day of Shabbat” (Psalms 92:1). Rabbi Levi said: This [psalm] was stated by Adam.

(20:5) "You shall not bow down to them and you shall not serve them." What is the intent of this? From (Devarim 17:3) "… and he go and serve other gods and he bow down to them," I would not know whether he is liable for the serving in itself and for the bowing down in itself or that he is not liable until he serves and bows down; it is, therefore, written (here) "You shall not bow down to them and you shall not serve them" — to make each liable in itself. Variantly: What is the intent of "You shall now bow down"? (Exodus 22:19) "He who slaughters to a god shall be put to death — only to the L rd alone" tells us of the punishment. Whence (do we derive) the exhortation? From "You shall not bow down." (Ibid.) "for I am the L rd your G d, a G d of rancor": I rule over wrath and wrath does not rule over Me. As it is written (Nachum 1:2) "The L rd is vengeful and the Master of wrath." Variantly: "I am the L rd your G d, a G d of rancor": With rancor I exact payment for idolatry, but I am merciful and compassionate in other things. A certain philosopher asked R. Gamliel: It is written in your Torah "for the L rd your G d is a wrathful G d." Now is there power in idolatry to arouse wrath (in G d)? One here is envious of another; one sage is envious of another, one man of wealth is envious of another. But is there power in idolatry to arouse wrath (in G d)? He answered: If a son called a dog by his father's name, and when he bowed, he did so "by the life of this dog" ("father'), against whom will the father's wrath be aroused? Against the son or the father? He (the philosopher) then said to him: Do you call it (idolatry) "a dog"? Is there not a need for some of it? He answered: What did you see (that makes you think so)? He answered: A fire once consumed a certain province except for their house of idolatry. Is it not that it (the idolatry) stood up for itself? R/ Gamliel: I will give you an analogy. A king of flesh and blood, when he goes out to war, with whom does he fight? With the living or with the dead? The philosopher: With the living. The philosopher (asks further): If He does not need some of it (i.e., those things which are the object of idolatry), why does He not destroy them? R. Gamliel: Do you serve only one thing? You serve the sun, the moon, the stars, the constellations, the mountains, the hills, the water courses, the ravines, and even men! Shall His world go lost because of the fools?