New International Version
"Is my complaint directed to a human being? Why should I not be impatient?

American Standard Version
As for me, is my complaint to man? And why should I not be impatient?

Berean Study Bible
Is my complaint against a man? Then why should I not be impatient?

Douay-Rheims Bible
Is my debate against man, that I should not have just reason to be troubled?

English Revised Version
As for me, is my complaint to man? and why should I not be impatient?

King James Bible
As for me, is my complaint to man? and if it were so, why should not my spirit be troubled?

World English Bible
As for me, is my complaint to man? Why shouldn't I be impatient?

Young's Literal Translation
I -- to man is my complaint? and if so, wherefore May not my temper become short?

Job 21:4 Additional Translations ...