Our God is an English translation of Hamara Khuda written by Hadrat Mirza Bashir Ahmad(ra), M. A. in the prime of his youth. The book was written largely for the youth who were being swept by the onslaught of atheist literature. It is as relevant today as then; rather more so. The book mainly addresses the issue of Existence of God from the point of view of rational arguments. It furnishes cogent reasons as to why we cannot see God. The beauty of God lies in His being Hidden from our physical eyes, and yet being apparent to us through his creation and revelation. The universe, human nature, morality, universal acceptance of God, supremacy of Prophets and testimony of the righteous are the bases on which the author successfully develops the arguments for the existence of God. For a reflective mind everything in the world points to God. Even the smallest constituent of the universe presents an unfathomable puzzle for the human mind. The Christian church was, and continues to be, mainly responsible for advancing a totally false and absurd view that there is fundamental contradiction between science and religion. The Holy Quran and the Holy Prophet(sa) categorically reject this view. The author deals with the issue comprehensively and shows that there is not, and cannot be, a contradiction between science and religion. Next, the writer deals with advantages of belief in God; it brings about unity, dissuades from evil, encourages to do good, helps to understand the nature of things and brings about true satisfaction and contentment. Seven main Atheistic arguments are successfully refuted by very powerful arguments. Lastly, a comparison is made between drawbacks of Communism-which is considered to be a branch of Atheism-and advantages of economic system of Islam.