YOU SAID:

if the years stop coming and they do not stop coming

INTO JAPANESE

年が来なくなっても来ないのなら

BACK INTO ENGLISH

If it doesn't come even if the year goes by

INTO JAPANESE

年が経っても来なければ

BACK INTO ENGLISH

Even if the year passes, it must come

INTO JAPANESE

年が経っても来なければなりません

BACK INTO ENGLISH

It has to come even after years

INTO JAPANESE

何年も経っても来なければならない

BACK INTO ENGLISH

It has to come even after many years

INTO JAPANESE

何年も経っても来なければならない

BACK INTO ENGLISH

It has to come even after many years