GOD'S WORD® Translation
Though the river flows powerfully against it, it's not alarmed. It's confident [even] when the Jordan rushes against its mouth.

American Standard Version
Behold, if a river overflow, he trembleth not; He is confident, though a Jordan swell even to his mouth.

Berean Study Bible
Though the river rages, Behemoth is unafraid; he remains secure, though the Jordan surges to his mouth.

Douay-Rheims Bible
Behold, he will drink up a river, and not wonder : and he trusteth that the Jordan may run into his mouth.

English Revised Version
Behold, if a river overflow, he trembleth not: he is confident, though Jordan swell even to his mouth.

King James Bible
Behold, he drinketh up a river, and hasteth not: he trusteth that he can draw up Jordan into his mouth.

World English Bible
Behold, if a river overflows, he doesn't tremble. He is confident, though the Jordan swells even to his mouth.

Young's Literal Translation
Lo, a flood oppresseth -- he doth not haste, He is confident though Jordan Doth come forth unto his mouth.

Job 40:23 Additional Translations ...