Apostles are individuals chosen to spread the teachings of a religious leader, particularly in Christianity. The term is most commonly associated with the twelve disciples of Jesus Christ, who were selected to share his message and establish the early Christian church. Each apostle played a significant role in spreading Christianity after Jesus's death and resurrection. In addition to the original twelve, the term "apostle" can also refer to other key figures in early Christianity, such as Paul of Tarsus, who traveled extensively to preach and write letters that form part of the New Testament. Apostles are often seen as foundational figures in the development of Christian doctrine and community.