The Opus Spiritus Sancti, (literally meaning "Work of the Holy Spirit") is a Catholic organization originating from Germany.
[3] In October 1949, Bendel discussed the founding of a sisterhood with the then Vicar General of the Diocese of Limburg, Georg Höhle.
In January 1950, Bernhard Bendel made a pilgrimage to Rome to the tombs of the Apostles Peter and Paul on the occasion of the beatification of Vincent Pallotti.
Starting with seven deaconess sisters, Bernhard Bendel developed a women's community from 1950, which called itself Opus Spiritus Sancti (Work of the Holy Spirit).
Since 1952, a secular institute for diocesan priests has developed, whose members dedicated their lives to the Holy Spirit.
The current international leader is Mrs. Inge Keller from Oberursel, and for Germany, Mrs. Bernadette Knauer, Mainz, is responsible.
The OSS practices an Easter-Pentecostal spirituality, which is laid down in the Directorium Spirituale (published by the ILT of the Opus Spiritus Sancti).
[6] Past leaders of the Opus were; The conference house of the communities is under the leadership of SIW and SIP, further advised by a spiritual director.