"CAELO REDEMPTOR PRAETULIT". — Hymn of Matins on the feast of the Maternity of the Blessed Virgin. It is found in a Portuguese breviary of the 1700s, and only in 1931 did Pius XI, in memory of the centenary of the Council of Nicaea, include it in the Roman Breviary together with the office of the Maternity, whose feast was extended to the universal Church. The content is expository in a precise and dogmatic form.
Bibl. (also for the previous hymns): G. G. Belli, Gli inni del Breviario romano tradotti, Rome 1897, pp. 262 sg., 398 sg., 80, 232, 508; C. Albin, La poésie du Bréviaire romain, Lyons n.d., pp. 283, 342, 438, 72, 513; A. Mirra, Gli inni del Breviario romano, Naples 1947, pp. 213, 177, 263, 69, 198, 184.