מדרש אויף קהלת 5:18

“Just as you do not know the path of the wind, or how the bones grow in the womb of one who is pregnant; so you will not know the work of God, who does everything” (Ecclesiastes 11:5).
“Just as you do not know” – there are seven matters obscured from people, and they are the day of death, the day of consolation, the profundity of judgment, how one profits, what is in the heart of another, what is in a woman’s pregnancy, and this kingdom of Edom, when it will fall. The day of death, from where is it derived? It is as it is stated: “Man [also] does not know his time” (Ecclesiastes 9:12). The day of consolation, from where is it derived? It is as it is stated: “I am the Lord; at its time I will hasten it” (Isaiah 60:22). The profundity of judgment, from where is it derived? It is as it is stated: “For judgment is God’s” (Deuteronomy 1:17). How one profits, from where is it derived? It is as it is stated: “This is the gift of God” (Ecclesiastes 5:18). What is in the heart of another, from where is it derived? It is as it is stated: “I am the Lord, who probes the heart” (Jeremiah 17:10). What is in a woman’s pregnancy, from where is it derived? It is as it is stated: “Or how the bones grow in the womb of one who is pregnant.” And this kingdom of Edom, when it will fall, from where is it derived? It is as it is stated: “For it is a day of vengeance in My heart” (Isaiah 63:4).

Chapter 42: Writings [1] "The earth is filled with the abundance of God's waters" (Psalms 65:10). "With the abundance of the good things that they have, they will enjoy them" (Ecclesiastes 5:18). "When the righteous are numerous in the world, good things come to the world, as it is said, 'When the righteous are many, the people rejoice'" (Proverbs 29:2). Similarly, Moses said, "So that it may go well with you and your children after you forever" (Deuteronomy 12:28), "When you do what is good and right in the sight of the Lord your God" (Deuteronomy 12:28). And you find in every place that the righteous went, they brought good things with them. Jacob went to Laban's house, and good things went with him, as it is said, "And God blessed me on account of you" (Genesis 30:27), and it is said, "May the Lord bless you as you go" (Genesis 28:15). You find that Laban did not have sons until Jacob came, as it is said, "And he heard the words of Laban's sons" (Genesis 31:1). It is not written here, "Laban's daughters," but "Laban's sons." Therefore, "May the Lord bless you as you go" (Genesis 33:30). When Joseph went to Potiphar's house, good things went with him, as it is said, "And the Lord blessed the Egyptian's house because of Joseph" (Genesis 39:5). And when Jacob went to Egypt, he blessed Pharaoh, as it is said, "And Jacob blessed Pharaoh" (Genesis 47:7), so that the Nile rose to meet him. When his granaries were filled, a messenger came to Pharaoh and said to him, "The Nile has risen today to such and such a level," and immediately the famine ended. This is what is meant by "The earth is filled with the abundance of God's waters." (Psalms 65:10)