Berean Study Bible
so that you may know the certainty of the things you have been taught.

King James Bible
That thou mightest know the certainty of those things, wherein thou hast been instructed.

American Standard Version
that thou mightest know the certainty concerning the things wherein thou wast instructed.

Darby Bible Translation
that thou mightest know the certainty of those things in which thou hast been instructed.

Douay-Rheims Bible
That thou mayest know the verity of those words in which thou hast been instructed.

English Revised Version
that thou mightest know the certainty concerning the things wherein thou wast instructed.

Young's Literal Translation
that thou mayest know the certainty of the things wherein thou wast instructed.