Leonard Ravenhill emphasizes the incredible nature of our spiritual inheritance, which is incorruptible and undefiled, contrasting it with the fleeting and corruptible things of this world. He uses humor to engage the audience, likening their response to auctioneering to a deaf and dumb crowd, highlighting the importance of recognizing and valuing this divine gift. Ravenhill encourages believers to appreciate the eternal promise that awaits them, which is beyond comparison to earthly possessions.