How the Heavenly Court Waits on Israel's Calendar at Rosh Hashanah

Rabbi Hosha'ya said: When Israel reaches Rosh Hashanah, the Holy One, blessed be He, says to the ministering angels: Set up the tribunal and bring out the books. And they say: Why? And He says: Because I wish to judge My children tomorrow, for it is Rosh Hashanah. Immediately they set up the tribunal and bring out the books. The earthly court took counsel to intercalate the year, saying: Tomorrow we will make Rosh Hashanah. The ministering angels say before the Holy One, blessed be He: Sovereign of the World, did You not say to us that tomorrow is Rosh Hashanah? He said to them: The reckoning is in their hands, as it is said, "This month is for you" (Exodus 12:2) - it is handed over to you. And I and you will go to My children, for whatever they do, we will go along with them. Moses said, "For what great nation is there that has a God so near to it as the LORD our God whenever we call upon Him" (Deuteronomy 4:7), and the expression "call upon" refers only to the appointed festivals, as it is said, "the holy convocations" (Leviticus 23:4). Therefore it is written, "This month."