God is described in the Baháʼí writings a single, personal, inaccessible, omniscient, omnipresent, imperishable, and almighty God who is the creator of all things in the universe. The existence of God and the universe is thought to be eternal, without a beginning or end. The Baháʼí teachings state that God is too great for humans to fully comprehend, or to create a complete and accurate image of, by themselves. Therefore, human understanding of God is achieved through his revelations via his Manifestations. In the Baháʼí religion God is often referred to by titles and attributes (e.g. the All-Powerful, or the All-Loving), and there is a substantial emphasis on monotheism. The Baháʼí teachings state that the attributes which are applied to God are used to translate Godliness into human terms and also to help individuals concentrate on their own attributes in worshipping God to develop their potentialities on their spiritual path. According to the Baháʼí teachings the human purpose is to learn to know and love God through such methods as prayer, reflection and being of service to humankind.