GOD'S WORD® Translation
What I mean is that we may be encouraged by each other's faith.

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.

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

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.

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

World English Bible
that is, that I with you may be encouraged 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.

Romans 1:12 Additional Translations ...