Vous avez cherché: a promise is kept (Anglais - Latin)

a promise
promissio

promised, a promise
pollicitus

there is nothing in this matter is kept lo
re humilius

for the promise is unto you, and to your children, and to all that are afar off, even as many as the lord our god shall call.
vobis enim est repromissio et filiis vestris et omnibus qui longe sunt quoscumque advocaverit dominus deus noste

ye shall have a song, as in the night when a holy solemnity is kept; and gladness of heart, as when one goeth with a pipe to come into the mountain of the lord, to the mighty one of israel.
canticum erit vobis sicut nox sanctificatae sollemnitatis et laetitia cordis sicut qui pergit cum tibia ut intret in montem domini ad fortem israhe

but do not thou yield unto them: for there lie in wait for him of them more than forty men, which have bound themselves with an oath, that they will neither eat nor drink till they have killed him: and now are they ready, looking for a promise from thee.
tu vero ne credideris illis insidiantur enim ei ex eis viri amplius quadraginta qui se devoverunt non manducare neque bibere donec interficiant eum et nunc parati sunt expectantes promissum tuu