| Sempiternus Rex Encyclical of Pope Pius XII | |
|---|---|
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| Signature date | 8 September 1951 |
| Number | 21 of the pontificate |
| Text | |
Sempiternus Rex is an encyclical of Pope Pius XII dated in Rome at St. Peter on 8 September 1951, the feast of the Nativity of the Blessed Virgin Mary, on the 1500th anniversary of the Ecumenical Council of Chalcedon, which declared Christ to be both fully human and fully divine.[1]
- ^ Sempiternus Rex 1951, AAS 625