Dirk Ficca was committed to peaceful and fruitful coexistence between people of all walks of life and worked for many years in interfaith dialogue and practice both in the US and globally.
Dirk Ficca got to know, now Archbishop of Church of Sweden, Antje Jackelén during her time as visiting professor at Lutheran School of Theology in Chicago. They became good friends and she chose him as one of her advisors in her role as bishop, and later as Archbishop.