Berean Study Bible
so that you may be able to test and prove what is best and may be pure and blameless for the day of Christ,

King James Bible
That ye may approve things that are excellent; that ye may be sincere and without offence till the day of Christ;

American Standard Version
so that ye may approve the things that are excellent; that ye may be sincere and void of offence unto the day of Christ;

Darby Bible Translation
that ye may judge of and approve the things that are more excellent, in order that ye may be pure and without offence for Christ's day,

Douay-Rheims Bible
That you may approve the better things, that you may be sincere and without offence unto the day of Christ,

English Revised Version
so that ye may approve the things that are excellent; that ye may be sincere and void of offence unto the day of Christ;

Young's Literal Translation
for your proving the things that differ, that ye may be pure and offenceless -- to a day of Christ,