Inbrunst
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
German > Latin
Inbrunst, des Gebets, precum constantia (unablässiges Bitten); infimae preces (die demütigsten Bitten). – I. der Liebe, ardor amoris; ardentes amores. – mit I., s. inbrünstig, inständig (Adv.).