Summary: Mercy constitutes the core of missionary spirituality. As the Patron of Mission, St Thérèse of Lisieux remains an eloquent testimony of missionary spirituality. Taking her as a model, teacher and guide, this article reflects on certain interior attitudes which distinguish
her as an apostle of mercy and which today’s missionary disciples are called to emulate if they have to become credible ambassadors of God’s loving mercy.
Key Words: Missionary Spirituality, St Thérèse of Lisieux, Year of Mercy, Pope Francis, Missionary disciple.