John Nelson Darby expounds on Mark 11, emphasizing Jesus' dual identity as the Son of David and the Son of Man, highlighting His rightful claim to kingship and authority over all. He illustrates how Jesus' entry into Jerusalem fulfilled prophecy and demonstrated His acceptance as the Messiah, despite the impending rejection by the people. The sermon also discusses the significance of faith in God, the importance of bearing fruit in our lives, and the judgment on Israel for its unfruitfulness. Darby concludes by reflecting on the authority of Jesus in the temple and the failure of the religious leaders to recognize His divine mission. Ultimately, he underscores the grace of God that remains available to all who believe, despite human failure.