8th responsory at Matins on All Saints.
Source of text is Jeremiah 40:10 and Matthew 25:6.
Also suitable for Advent.
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Text and translations
Audivi vocem de caelo venientem: venite omnes virgines sapientissime;
oleum recondite in vasis vestris dum sponsus advenerit.
Media nocte clamor factus est: ecce sponsus venit.
I heard a voice coming from heaven: come all wisest virgins;
fill your vessels with oil, for the bridegroom is coming.
In the middle of the night there was a cry: behold the bridegroom comes.