Berean Study Bible
I fear for you, that my efforts for you may have been in vain.

King James Bible
I am afraid of you, lest I have bestowed upon you labour in vain.

American Standard Version
I am afraid of you, lest by any means I have bestowed labor upon you in vain.

Darby Bible Translation
I am afraid of you, lest indeed I have laboured in vain as to you.

Douay-Rheims Bible
I am afraid of you, lest perhaps I have laboured in vain among you.

English Revised Version
I am afraid of you, lest by any means I have bestowed labour upon you in vain.

Young's Literal Translation
I am afraid of you, lest in vain I did labour toward you.