Vouchsafe, O Lord (Greek Καταξίωσον, Κύριε, Latin Dignare, Domine) are the initial words of a prayer from the Matins and Vespers service of the Eastern Orthodox, [citation needed] and the former Prime and Compline of the Roman and Eastern Catholic Churches, and for Matins and Vespers (or Morning and Evening Prayer) of the Anglican, Lutheran, and other liturgical Protestant churches.

Vouchsafe “to agree,” is found in the best texts in Act 7:17, and rendered “vouchsafed,” RV, with reference to God’s promise to Abraham; some mss. have omosen, “swore” (omnumi, “to swear”), as in AV.