Final answer:
The synoptic gospels end with the resurrection of Jesus and his instructions to the disciples: Matthew includes the Great Commission, Mark ends abruptly with the discovery of the empty tomb, but has longer alternative endings, and Luke concludes with the ascension.
Step-by-step explanation:
The endings of the synoptic gospels, namely Matthew, Mark, and Luke, are significant as they encapsulate the accounts of Jesus' resurrection and the instructions he left for his followers. In the Gospel of Matthew, the ending includes the Great Commission, where Jesus instructs his disciples to make disciples of all nations. The Gospel of Mark traditionally ends abruptly with the women finding the empty tomb and fleeing in fear and amazement, although there are longer endings in some manuscripts addressing the resurrection appearances and commissioning. The Gospel of Luke concludes with the resurrection appearances, Jesus' explanation of the scriptures, and his ascension into heaven. These endings highlight the importance of sharing Jesus' teachings and the spread of the Christian faith as a central mission.