Conditor alme siderum

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Conditor alme siderum is a seventh-century Latin hymn used during the Christian liturgical season of Advent.[1] It was formerly ascribed to Saint Ambrose, but there is no contemporaneous evidence to support the attribution. The hymn has been mainly used in the Divine Office at Vespers[2] An English translation by J.M. Neale is the well-known Advent hymn Creator of the Stars of Night.


The hymn was rewritten by Pope Urban VIII in 1632, changing it so extensively that only the second line of the original hymn remained unchanged. The revision, which begins Creator alme siderum, in effect makes it a different composition.[3] While not being part of the original text, most versions also include a doxology of some sort, usually appended as verse 6.

J.M. Neale made a translation of the hymn which appeared as Creator of the Stars of Night in the first edition of the Hymnal Noted in 1852.[4] The ancient text was restored by the Vatican in the most recent version of the traditional Breviary, where it is indicated for use at Vespers on the First Sunday of Advent.[5]

The two different versions of this hymn are often confused. The translations of Conditor alme siderum included in Wikisource (Conditor alme siderum) are actually translations of Creator alme siderum.



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