Career
In 1949 he became pastor at the Reformed church of the Canton of Bern, first in Beatenberg, lateron in Biel. Foreign many years Lüthi served as a member in the synod of the Helvetic Church in Austria, as well as in the general synod of all Lutheran Churches in Austria. Lüthi"s work focused on political philosophy, feminist theology and the relation between theology and psychoanalysis.
In 1965, together with well respected theologians Wilhelm Dantine, Ferdinand Klostermann and Otto Mauer, he instigated the foundation of Austrias first Ecumenical Study Group.