Berean Standard Bible (BSB)
that is, that you and I may be mutually encouraged by each other’s faith.
World English Bible (WEB)
that is, that I with you may be encouraged in you, each of us by the other’s faith, both yours and mine.
Strong's King James
That{G1161}{G5124} is{G2076}{(G5748)}, that I may be comforted together{G4837}{(G5683)} with{G1722} you{G5213} by{G1223}{G1722} the mutual{G240} faith{G4102} both{G5037} of you{G5216} and{G2532} me{G1700}.
The F.O.G *
(12) This is so I'm encouraged together in you, each of us by one another's believing-faith, both yours and mine.
The F.O.G Message *
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.