The Holy Spirit in the Church Ruthie Oberg Guest Speaker, Ruthie Oberg, shared on the history of the Holy Spirit in the Church. Ruthie Oberg works with the Flower Pentecostal Heritage Center as a historian and has previously worked as an ordained pastor in the Assemblies of God. Ruthie has a passion for learning and sharing christian religion history as well as presenting opportunities to others to hear the Word of Christ and experience His presence in their lives.