Sadhu Sundar Singh became an Indian Christian missionary whose life and message had a far ranging impact. Born into a Sikh family, Sundar grew up a faithful Sikh. When a boy, he converted to Christianity, incurring the rejection by his father. Sundar withdrew from a Christian seminary after refusing to cast off his Sikh clothing and wear Western clothing. That set the direction of his ministry, seeking to wear the clothing and speak the terminology of the Sikh while conveying the Christian message. Sundar's impact went far and wide, influencing important spiritual leaders, such as Mahatma Gandhi and C.S. Lewis.