Horatius Bonar emphasizes the hope of a future day when God will right all wrongs, drawing parallels between the desolation of Jerusalem and the current state of the world filled with evil and injustice. He highlights that despite the darkness surrounding us, believers can find comfort in the promise of God's righteous judgment and the eventual triumph of truth over error. Bonar encourages patience and faith, reminding us that God's day will bring an end to blasphemy, evil, and error, while vindicating the saints and restoring justice. This day, though feared by some, is to be longed for by believers as it signifies the return of God's presence and the establishment of His kingdom. Ultimately, Bonar calls for hope and perseverance in the face of adversity, trusting in God's timing and justice.