With the heart of an explorer and the passion of an evangelist, David Livingstone mapped vast, unexplored areas of Africa, sharing the gospel with whomever he encountered. His stamina, perseverance, and dogged determination created the legacy of a trailblazing explorer with an undying hunger to make Christ known wherever his steps led him. David Livingstone's captivating adventures and tireless zeal continue to inspire countless men and women to bring the gospel message of God's love to those souls who have never heard.

As America's first foreign missionary, Adoniram Judson (1788-1850) spent 38 years working in Burma, then one of the most hostile countries on Earth. Judson was ignored, mocked, beaten, and tortured, yet he never lost sight of his goal to translate the Bible into the Burmese language. Today, over 150 years after his death, his translation remains the only translation of the Bible in Burmese.

As a 14-year-old intent on living a "modern" life, the last thing Isobel Kuhn (1901-1957) wanted to grow up to be was a missionary. But as it turned out, this young agnostic's life was redirected - from crisis and doubt to hope and strength. Convinced that God wanted her to preach the gospel as a China inland missionary, Isobel bravely served among the Lisu people in remote mountainous regions of China and Thailand. After 20 years of ministry Isobel returned to the United States, writing stirring stories of faith and inspiring generations of listeners.

Ida had never forgotten the faces of starving Indian children. She hated India - it was full of horrible situations she could do nothing about. Ida Scudder was sure she would never follow in the footsteps of her medical missionary father. But when she witnessed Indian women dying because their religious beliefs didn't allow male doctors to treat them, Ida heard herself pray, "God, if you want me to, I will spend the rest of my life in India trying to help these women."

Exposed to the horrendous living conditions of women prisoners and their children, Elizabeth Fry pledged to improve the lives of society's most desperate people - something no one else dared to do. Telling doubters, "If I don't, who will?" Betsy became one of England's greatest reformers and one of the 19th century's most beloved people. Guided by her Quaker values, she led efforts in education and literacy, prison reform, and - together with figures such as William Wilberforce and Thomas Fowell Buxton - the abolition of slavery.

Betty Greene coaxed her Grumman seaplane to 2,000 feet.... Suddenly, silence - total silence. The plane engine had stopped! Her passengers gasped, but Betty knew she must remain calm. They had only one slim chance for survival: The twisting jungle river below them. As a young girl growing up on the shores of Lake Washington, Betty Greene had two passions: A love for Christ and a love of flying. As a young World War II WASP pilot, Betty dreamed of combining her two passions by using wings to serve God.

Missionary trio Mildred Cable and Evangeline and Franscesca French were the first Englishwomen to cross the infamous Gobi Desert, living for years among the diverse peoples of northwestern China in places few Europeans ever reached. Educated and rich, Mildred Cable (1878-1952) once planned to be a concert pianist. Instead she served the people of China through wars and revolutions. Mildred followed Jesus with grit, determination, intelligence, and faith.

When Lillian Trasher (1887-1961) founded Egypt's first orphanage, others thought that a lone American woman with no means of support would surely be killed or starve to death. But Lillian - certain of God's guidance - stood by her earlier promise to Him, "If ever I can do anything for You, just let me know - and I'll do it."

A rip current overturned the whaleboat with eight Kanaka Christians aboard. Only three of the men could swim, and the others clung to the upturned boat. Sharks circled the three as they struggled to get to shore. The three survived, but the others could not be found. When Florence heard the news, she resolved to go on despite the dangers. Once timid and unsure of her own salvation, New Zealander Florence Young rose to her calling and became a fearless and faithful witness for Jesus Christ.

Suddenly, Corrie's (1892-1983) ordered life was lost in the insanity of war. With bravery and compassion, her family and countless other Dutch citizens risked everything to extend God's hand to those innocents marked for certain execution in a world gone mad. Corrie ten Boom's life of determination, faith, and forgiveness in the face of unimaginable brutality and hardship is a stunning testimony of the sustaining power of God.

Jim and Pete turned to see the Auca men, their deadly spears raised, running toward Nate, Ed, and Roger. Jim stood in the river, his hand on his pistol. Should he defend himself? He already knew the answer. Each man had promised the others that he would not save himself by killing those they had sought out in Jesus' name. Jim Elliot and his coworkers surrendered their lives in Ecuador's jungle, trusting that their sacrifice would not be in vain.

As Sundar preached the gospel to the crowd, the monastery guard marched forward and arrested him. Sundar was dragged to the edge of town and hurled to the bottom of an abandoned well. The air was putrid. Desperation and loneliness soon washed over him. Left to die, Sundar leaned against the side of the well and began to pray. Searching since boyhood for the way to God, Sundar Singh found truth in Jesus Christ.

Born into a loving family, Dietrich Bonhoeffer (1906-1945) pursued a life as a pastor, teacher, theologian - and spy. He spoke out about the trouble in Germany when Adolph Hitler came to power, urging the Christian church to rescue disparaged people groups and resist Hitler’s evil empire. Accused of being a troublemaker, Dietrich continued on fearlessly in the midst of wickedness. His work as a spy in the German resistance and participation in a plot to assassinate Hitler led to imprisonment and eventual execution.

One of the famous Doolittle Raiders who first attacked Japan after the bombing of Pearl Harbor, Jacob DeShazer (1912-2008) knew this one-way mission was dangerous. Indeed, it led to his capture as a prisoner of war. Beaten, malnourished, and alone in his cell, Jacob was given a Bible - and far away from home, this American soldier became a Christian.

William's amazing journey to India would prove to be just the beginning of a missionary quest filled with hardship and heartache as well as tremendous victories. Often referred to as "the father of modern missions", William Carey displayed a single-minded determination to set his face like a flint to the task of bringing the gospel to those lost in darkness. His life of service and sacrifice is a guidepost to Christians of all generations.