What do Moses and Elijah represent in the Transfiguration?

In the context of the Transfiguration, Moses and Elijah symbolize the Law and the prophets, respectively. Moses, the lawgiver, underscores the inability of humanity to achieve righteousness through the law alone, while Elijah represents the prophetic tradition that anticipated the coming Messiah. Their presence confirms that Jesus fulfills the purpose of both the Law and the prophets; they are engaged in conversation with Him about His impending sacrifice in Jerusalem, emphasizing the centrality of Christ's atoning work in God's redemptive plan.