For certainly, you have listened to him, and you have been instructed in him, according to the truth that is in Jesus
Other versions
King James Version
If so be that ye have heard him, and have been taught by him, as the truth is in Jesus:English Standard Version
assuming that you have heard about him and were taught in him, as the truth is in Jesus,New International Version
Surely you heard of him and were taught in him in accordance with the truth that is in Jesus.