ST. SOTER was raised to the papacy upon the death of St. Anicetus, in 173. By the sweetness of his discourses he comforted all persons with the tenderness of a father, and assisted the indigent with liberal alms, especially those who suffered for the faith. He liberally extended his charities, according to the custom of his predecessors, to remote churches, particularly to that of Corinth, to which he addressed an excellent letter, as St. Dionysius of Corinth testifies in his letter of thanks, who adds that his letter was found worthy to be read for their edification on Sundays at their assemblies to celebrate the divine mysteries, together with the letter of St. Clement, pope. St. Soter vigorously opposed the heresy of Montanus, and governed the Church to the year 177.
(Source: Butler’s Lives of the Saints)