Yiddish: If his word were a bridge, I'd be afraid to cross it.

SOURCE: Bernstein, Jüdische Sprichwörter und Redensarten.

זײַן וואָרט זאָל זײַן אַ בריק, וואָלט איך מורא געהאַט אַריבערצוגיין.

Zayn vort zol zayn a brik, volt ikh moyre gehat aribertsugeyn.

If his word were a bridge, I'd be afraid to cross it.