* one's word is as good as one's bond на его (ее и т.д.) слово можно положиться; его (ее и т.д.) слово - лучшая гарантия
HIS WORD IS AS GOOD AS HIS BOND
Англо-русский перевод HIS WORD IS AS GOOD AS HIS BOND
English-Russian dictionary of English idioms. Англо-Русский словарь английских идиом. 2012