YOU SAID:

what comes up must come down

INTO JAPANESE

来るものは下に来なければならない

BACK INTO ENGLISH

Things to come must come down.

INTO JAPANESE

来るものが降りてくる必要があります。

BACK INTO ENGLISH

There is a need for coming down.

INTO JAPANESE

- 戦争だ

BACK INTO ENGLISH

- There is a war coming.

INTO JAPANESE

- 戦争だ

BACK INTO ENGLISH

- There is a war coming.