Bartholomew the Apostle, also known as Nathanael, was one of the twelve apostles of Jesus Christ. He is often recognized for his straightforward nature and is mentioned in the New Testament, particularly in the Gospels of Matthew, Mark, and John. Bartholomew is traditionally believed to have preached in various regions, including Armenia and India. According to Christian tradition, Bartholomew was martyred for his faith, with some accounts suggesting he was flayed alive. His feast day is celebrated on August 24 in the Western Christian calendar. Bartholomew is often depicted in art holding a knife, symbolizing his martyrdom.