| Aeterna Dei sapientia Latin for 'God's eternal wisdom' Encyclical of Pope John XXIII | |
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| Signature date | 11 November 1961 |
| Subject | the See of Peter as the centre of Christian unity |
| Number | 6 of 8 of the pontificate |
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Aeterna Dei sapientia ("God's eternal wisdom") was the sixth encyclical made by Pope John XXIII, and was issued on 11 November 1961. It commemorates the fifteenth centennial of the death of Pope Leo I, also known as Leo the Great and a Doctor of the Church. It calls for Christian unity. It calls for Christendom to unite against external movements such as communism and secularism.[1]
- ^ "A Shepherd Calls". Time. 15 December 1961. Archived from the original on 5 February 2011. Retrieved 11 May 2008.