Horatius Bonar explores the multifaceted significance of the 'stone' in Matthew 21:44, emphasizing its role as a symbol of Christ. He discusses how this stone represents rejection, honor, stumbling, and ultimately destruction, urging listeners to consider their response to Christ. Bonar highlights that acceptance of this stone leads to salvation, while rejection results in eternal consequences. He calls for a personal evaluation of one's relationship with Jesus, the cornerstone of faith, and warns of the impending judgment for those who do not embrace Him. The sermon serves as a powerful reminder of the importance of recognizing Christ's true value in our lives.