πιστοῦσθαι
From LSJ
Μετὰ τὴν δόσιν τάχιστα γηράσκει χάρις → Post munera cito consenescit gratia → Gleich nach der Gabe altert äußerst schnell der Dank
Greek > English (Woodhouse Verbs Reversed)
(see also πιστόω): give security, pledge one's troth, pledge oneself
