“Following the Master, every Christian must renounce himself, take up his own cross, and participate in the sufferings of Christ. Thus transformed into the image of Christ’s death, he is made capable of meditating on the glory of the resurrection. Furthermore, following the Master, he can no longer live for himself, but must live for him who loves him and gave himself for him. He will also have to live for his brethren, completing ‘in his flesh that which is lacking in the sufferings of Christ . . . for in the benefit of his body, which is the church.'” 

—St Paul VI