Corrie ten Boom, an extraordinary woman. She and her sister were imprisoned in a concentration camp for harboring Jewish refugees in the Netherlands during WWII. Her book The Hiding Place will change your life.
Irena Sender, a Polish Catholic nurse social worker who served in the Polish Underground during World War II, and as head of children's section of Żegota, an underground resistance organization in German-occupied Warsaw. Assisted by some two dozen other Żegota members, Sendler smuggled 2,500 Jewish children out of the Warsaw Ghetto and then provided them with false identity documents and with housing outside the Ghetto, thereby saving those children from being killed in the Holocaust.