'''Cum Jam Lustri''' (1 September 1951) adalah sebuah surat apostolik [[Paus Pius XII]] kepada para uskup "dan orang-orang gagah berani" [[Polandia]] mengenai kesengsaraan mereka selama penindasan kaum Stalinis.<ref>AAS 1951, 775</ref> Ia memohon akan doa kepada Sang Perawan Maria karena Ia tidak akan menolak untuk membantu bangsa Polandia yang telah mempersembahkan diri mereka demi perlindungan-Nya.
The letter expresses Papal condolences to the death of [[Cardinal (Catholicism)|Cardinal]] [[August Hlond]] of [[Warsaw]] , who formed the face of the resurrected Poland and sacrificed his life for his country, the Church and the Representative of Christ.<ref> AAS 1951, 775</ref> The Pope also mourns the death [[Adam Stefan Cardinal Sapieha]] of [[Krakow]], who provided strong, courageous leadership during the terrible years of German occupation. Strengthening his fatherland and the Church, he was never timid despite all the persecutions. He took care of his people. Sapieha was like a firmly rooted tree, growing next to a river, his very existence an encouragement not only for Poland but for all of Christianity.
<ref>AAS 1951, 775</ref>
Knowing how much Poland adores the Blessed Mother, the Pope expresses his sadness that so many Polish bishops were not allowed to be in Rome during the proclamation of the [[Dogma of the Assumption]], November 1,[[ 1950]]. He is so much aware, that no other country has such an ardent love for the mother of the Lord. She will not deny her help to the Polish people, who dedicated themselves to her protection. He prays for her miraculous assistance and reminds, that Polish soldiers fought near the [[Basilica della Santa Casa]] in Loreto to save her house during he war. Polish soldiers also celebrated a Holy Mass in her honour, in smouldering ruins after the battle of [[Monte Cassino]]<ref> AAS 1951, 775</ref> The struggle continues. But, [[Pope Pius XII]] is sure, the [[Virgin Mary]] will help, as the high minded Polish people continue to trust in her and confidently hope for a better future.