ASV: that thou mightest know the certainty concerning the things wherein thou wast instructed.
BBE: So that you might have certain knowledge of those things about which you were given teaching.
DBY: that thou mightest know the certainty of those things in which thou hast been instructed.
KJV: That thou mightest know the certainty of those things, wherein thou hast been instructed.
WEY: that you may fully know the truth of the things which you have been taught by word of mouth.
WBS: That thou mayest know the certainty of those things in which thou hast been instructed.
WEB: that you might know the certainty concerning the things in which you were instructed.
YLT: that thou mayest know the certainty of the things wherein thou wast instructed.
