KJV - That is, that I may be comforted together with you by the mutual faith both of you and me.

ASV - that is, that I with you may be comforted in you, each of us by the other's faith, both yours and mine.

BBE - That is to say, that all of us may be comforted together by the faith which is in you and in me.

WEB - that is, that I with you may be encouraged in you, each of us by the other's faith, both yours and mine.

YLT - and that is, that I may be comforted together among you, through the faith in one another, both yours and mine.

Notes