Evangelii praecones

Evangelii praecones (June 2, 1951) was an encyclical letter of Pope Pius XII about Catholic missions. In it, he described necessary improvements and changes, and the persecution of the Church in some parts of the world. The encyclical was issued in commemoration of the 25th anniversary of the encyclical Rerum ecclesiae by his predecessor Pope Pius XI.[1]

Evangelii praecones
Encyclical of Pope Pius XII
Signature date2 June 1951
Number20 of the pontificate

It is sometimes identified as the first of five papal encyclicals issued between 1919 and 1959 that redefined the Church’s missionary role.[2]