Behemoth

"And God created the great sea-monsters" (Genesis 1:21). Here they translated it: the sea-gazelles. Rabbi Yohanan said: this is Leviathan the slant serpent and Leviathan the coiled serpent, as it is said, "On that day the LORD with His hard sword will punish" (Isaiah 27:1). Rav Yehudah said in the name of Rav: everything that the Holy One, blessed be He, created in His world, He created male and female. So too Leviathan the slant serpent and Leviathan the coiled serpent He created male and female; and had they coupled with one another they would have destroyed the entire world. What did the Holy One, blessed be He, do? He castrated the male and killed the female and salted her away for the righteous in the time to come, as it is said, "and He shall slay the dragon that is in the sea" (Isaiah 27:1). And so too the Behemoth on the thousand mountains, He created male and female; and had they coupled with one another they would have destroyed the entire world. What did the Holy One, blessed be He, do? He castrated the male and cooled the female and preserved her for the righteous in the time to come, as it is said, "Behold now his strength is in his loins" (Job 40:16), this is the male, "and his force is in the muscles of his belly" (Job 40:16), this is the female. And Rav Yehudah said in the name of Rav: the Jordan issues from the cave of Pamias, and flows through the Sea of Sivkhi and through the Sea of Tiberias, and rolls down into the Great Sea; and it rolls down until it reaches the mouth of Leviathan, as it is said, "he is confident though the Jordan rushes against his mouth" (Job 40:23).