2 Esdras 6:50

50 You separated them from each other because the sea wasn't big enough to hold them both.

2 Esdras 6:50 In-Context

48 At your command, the still and lifeless water brought forth living creatures, so that the nations might proclaim your wonderful works.

49 Then you singled out two of the living creatures; you named one of them Behemoth and the other Leviathan.

50 You separated them from each other because the sea wasn't big enough to hold them both.

51 You let Behemoth live on a part of the land that you dried up on the third day of creation; it is a land of a thousand mountains.

52 You let Leviathan live in the sea. You kept them both alive, so that your chosen people may feast on them at the time you choose.