i believe the translation of the sentence gott lie uns fallen und so st rzen wir denn auf ihn zu is possibly inaccurate because perhaps the author translated the separable verb zust rzen as the simple verb st rzen in my german english dictionary st rzen to fall or to crash zust rzen rush up to but if d rrenmatt was writing in a swiss german dialect which i know almost nothing about other than that german speakers sometimes have difficulty understanding swiss german speakers these words could have different meanings and i could be completely wrong i think a better translation would be god lets us fall and so then we rush back to him