 Groups with Unitarian theology such as Polish Socinians, the 18th-19th Century Unitarian Church, and Christadelphians conceive of the Holy Spirit not as a person but an aspect of God's power.Christadelphians believe that the phrase "Holy Spirit" refers to God's power, mind or character depending on the context.Though Arius believed that the Holy Spirit is a person or high angel, that had a beginning, modern Semi-Arian groups such as Dawn Bible Students and Jehovah's Witnesses believe that the Holy Spirit is not an actual person but is God's "power in action", "breath" or "divine energy", which had no beginning, and which proceeds only out of the Father, and through the Son, which the Father uses to accomplish his will.