Origin of Dominus vobiscumClassical Latin
Dominus vobiscumDominus vo·bis·cum
From Latin dominus vobiscum ‘the lord be with you’, apparently taken from the Bible (e.g. Ruth 2:4 ‘And behold, Boaz came from Bethlehem, and said unto the reapers, The LORD be with you. And they answered him, The LORD bless thee’).