YOU SAID:

My brother told me that his wife was under a threat from his sister.

INTO JAPANESE

兄は妻が妹から脅迫を受けていると私に言った。

BACK INTO ENGLISH

My brother told me that my wife was being threatened by my sister.

INTO JAPANESE

私の兄は私の妻が妹に脅されていると言った。

BACK INTO ENGLISH

My brother said that my wife was being threatened by her sister.

INTO JAPANESE

兄は妻が妹に脅されていると言った。

BACK INTO ENGLISH

My brother said that his wife was being threatened by her sister.

INTO JAPANESE

兄は妻が妹に脅されていると言った。

BACK INTO ENGLISH

My brother said that his wife was being threatened by her sister.