O God, who by the lowliness of thy Son hast raised a fallen world: Grant to thy faithful people perpetual gladness; and as thou hast delivered them from eternal death, so do thou make them partakers of everlasting joys; through the same Jesus Christ our Lord.
8th-century Gelasian Sacramentary: http://liberlocorumcommunium.blogspot.com/2015/03/in-filii-tui-humilitate-iacentem-mundum.html.