The term "Doubting Thomas" refers to the biblical figure Thomas the Apostle, who is known for his skepticism regarding the resurrection of Jesus Christ. According to the Gospel of John, Thomas refused to believe that Jesus had risen from the dead until he could see and touch the wounds of Christ himself. This story highlights the theme of doubt and faith in religious contexts. Today, the phrase "Doubting Thomas" is often used to describe someone who is skeptical or requires proof before accepting something as true. It emphasizes the importance of evidence and critical thinking in forming beliefs, reflecting a broader human tendency to question and seek validation.