 Baruch Spinoza listed the proposition in that God is One second among the doctrines of universal faith and the fundamental dogmas of Scripture that tend to the central doctrine that there exists a God, a Supreme Being, Who loves justice and charity, and Who must be obeyed by whoever would be saved, and that the worship of God consists in the practice of justice and love towards one's neighbor.Spinoza argued that no one could dispute that the doctrine that God is One is absolutely necessary for entire devotion, admiration, and love towards God, for devotion, admiration, and love spring from the superiority of one over all else.Gerald Janzen, Professor Emeritus of Old Testament at Christian Theological Seminary, grouped interpretations of the word , "echad", in into two sorts