Number has become our true friend since the time we started thinking about the need to use it in our daily lives. Mathematics is omnipresent. Be it in business, architecture, designing, engineering, nature and even our religious texts. The Vedas, Upanishads, Puranas provide evidence for the use of large numbers, fractions, the concepts of infinity and zero. Advanced mathematical concepts are discussed in the two great Hindu epics, Ramayana and Mahabharata. Besides, there are many instances in the Bible, the Quran and many other scriptures which speak in volumes about their mathematical richness. Many people are of the belief that math and religion are on the opposing sides. However, in ancient times, math and religion always went hand in hand and civilizations used math to explain the world around them. Mathematics in Religion demonstrates that the root of mathematics lies in religious texts. It is important to study these texts across religions, like Hinduism, Islam, Jainism and Buddhism, to discover the fascinating world of mathematical concepts hidden in them.