The Week of Prayer for Christian Unity: January 18-25, “constitutes, for believers in Christ, a propitious time to revive the ecumenical spirit, to meet each other, to get to know each other, to pray and reflect together.” Making reference to the Bible theme chosen this year: “You are witnesses of these things” (Luke 24:48), the Pope affirmed that “our proclamation of the Gospel of Jesus will be much more credible and effective the more that we are united in his love, as true brothers. Thus, I invite parishes, religious communities, ecclesial movements and associations to pray unceasingly, in a special way during Eucharistic Celebrations, for the complete unity of Christians.” Benedict XVI
The week of prayer is during the novena of St. Paul's Transformation (Conversion). The painting here is of Mary, Mother of the Good Shepherd. Jesus is feeding his sheep with Sts Peter and Paul.