Frederick Antony Ravi Kumar Zacharias (26 March 1946 – 19 May 2020) was an Indian-born Canadian-American Christian evangelical minister and Christian apologist who founded Ravi Zacharias International Ministries (RZIM). He was involved in Christian apologetics for a period spanning more than forty years, authoring more than thirty books.[1][2] He also hosted the radio programs Let My People Think and Just Thinking.[3][4] Zacharias belonged to the Christian and Missionary Alliance (C&MA), the Keswickian Christian denomination in which he was ordained as a minister.[5]