Yours is the day, O Lord,
and yours is the night.
Let your Sun of righteousness
remain in our hearts
to drive away the darkness
of wicked thoughts;
through Jesus Christ our Lord.
Source: Gelasian Sacramentary
Source of this version: Freely modified from Ancient Collects, and Other Prayers, ed. William Bright, 1902, p. 10 #4
Graphic, Gelasian Sacramentary, from Wikipedia.com
A Collection of Prayers 
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