“Doubting Thomas” refers to the Apostle Thomas, who initially refused to believe in Jesus Christ’s resurrection without physical proof. According to the Gospel of John, Thomas declared he would not believe unless he saw and touched Jesus’ wounds. When Jesus appeared and invited him to do so, Thomas believed, exclaiming, “My Lord and my God!” This story has come to symbolize skepticism and the human desire for evidence. The term “Doubting Thomas” is now commonly used to describe someone who is hesitant or unwilling to believe without direct experience. His story emphasizes both doubt and the power of personal revelation.