Berean Study Bible
that is, that you and I may be mutually encouraged by each other’s faith.

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

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

Darby Bible Translation
that is, to have mutual comfort among you, each by the faith [which is] in the other, both yours and mine.

Douay-Rheims Bible
That is to say, that I may be comforted together in you, by that which is common to us both, your faith and mine.

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

Young's Literal Translation
and that is, that I may be comforted together among you, through the faith in one another, both yours and mine.