YOU SAID:
When I saw her face I knew I'm a believer
INTO JAPANESE
私は彼女の顔を見たとき、私は信者であることを知っていた
BACK INTO ENGLISH
When I saw her face, I knew I was a believer
INTO JAPANESE
私は彼女の顔を見たとき、私は信者であることを知っていた
BACK INTO ENGLISH
When I saw her face, I knew I was a believer
That didn't even make that much sense in English.