The book "The Migrant Tamil Christians in Mumbai: A History" is the result of long years of research work. It conveys about the religion we inherited and practice today. It uncovers to the readers a rich Tirunelveli heritage and faith transmitted down the ages we are often ignorant about. Our ancestors in Tirunelveli and Mumbai soils had no idea how their future will unfold when they embraced Christianity. They spearheaded a borrowed faith and tradition from the European missionaries whose dedication of their lives and families to the cause of the gospel of Jesus Christ, has no parallel. We, as Indian Christians, are greatly indebted to the immense sacrifices made by our forefathers and mothers.