Andrew Bonar preaches on the concept of cities of refuge as a divine provision for sinners, illustrating how these cities symbolize the salvation found in Christ. He emphasizes that the path to refuge is clear and accessible, with no barriers preventing the sinner from reaching Jesus, the ultimate refuge from judgment. Bonar draws parallels between the manslayer seeking safety and the sinner seeking redemption, highlighting the importance of fleeing to Christ without delay. He encourages believers to recognize their need for salvation and to trust in God's promise that all who come to Him will be received. The sermon concludes with a call to remain in Christ, the eternal city of refuge, until His return.