Islam makes up around 20% of the world's population. It is the second largest religion in the world, trailing only Christianity. Muslims are spread primarily over the areas of North Africa, the Middle East, South-Central Asia, and Indonesia. Although Islam began in Saudi Arabia, non-Arab Muslims now outnumber Arab Muslims by a ratio of almost three to one. Also, the four nations with the largest number of Muslims today are all outside the Middle East. Indonesia-166 million (88% of the population); Pakistan-111 million (97%); Bangladesh-97 million (85%); and India-93 million (11%). Do you know that Islam is the fastest growing religion in the world today? Do you know that a significant number of immigrants who come to the United States are Muslims? And do you know that these immigrants come from many Islamic countries or countries with large communities of Muslims? Do you know that an estimated 4 to 6 million Muslims reside in the United States?

Hinduism is believed to be the oldest living religious traditions in the world. There are approximately one billion Hindus, making Hinduism the third largest religion in the world after Christianity and Islam, of whom approximately 890 million live in India (around 82% of India's population). It is estimated that adherents to Hinduism make up around 15% of the world's population. Other countries with large Hindu populations include: Bangladesh (11%), Bhutan (25%), Fiji (41%), Mauritius (50%), Nepal (89%), Sri Lanka (15%), Surinam (27%), and Trinidad (25%). Countries like Indonesia, Malaysia, South Africa, Tobago, and Guyana also have large number of Hindus. Nepal is the only nation where Hinduism is the state religion. There are more than two million Hindus in North America. Christian  must consider Hindus as one of the largest people groups in their mission agenda. In the following paragraphs, we will learn about Hinduism in nutshell for the missional purposes.

Sikhism founded on the teachings of Guru Nanak Dev and nine successive gurus in fifteenth century Northern India, is the fifth-largest religion in the world. The history of Sikhism began with the birth in 1469 AD of Guru Nanak Dev. The initiation (baptism) ceremony and other traditions of the religion were formalized by 1699 AD. This system of religious philosophy and expression has been traditionally known as the Gurmat (literally, the counsel of the gurus) or the Sikh Dharma. Sikhism originated from the word Sikh, which in turn comes from the Sanskrit root sisya meaning "disciple" or "learner", or siksa meaning "instruction". Sikhism advocates the pursuit of salvation through disciplined, personal meditation on the name and message of God. A key distinctive feature of Sikhism is a non-anthropomorphic concept of God, to the extent that one can interpret God as the Universe itself.