Saint Bartholomew, also known as Nathanael, is one of the twelve apostles of Jesus Christ. He is often associated with the spread of Christianity in the early church and is traditionally believed to have preached in various regions, including Armenia and India. His feast day is celebrated on August 24. In Christian art, Saint Bartholomew is frequently depicted holding a knife, symbolizing his martyrdom, as he is believed to have been flayed alive. He is also recognized as the patron saint of butchers and tanners. His life and contributions are commemorated in various religious texts and traditions.