Drawing from the Gospel of John, this sermon explores the profound distinction between temporary earthly sustenance and the everlasting spiritual nourishment found in Christ. Fr. Seraphim warns that focusing solely on "perishing food"—representing materialistic motives and earthly desires—eventually poisons the soul and leads to moral decay, much like expired food destroys the body. Through the tragic examples of King Ahab and Judas Iscariot, the author illustrates how unrestrained greed and selfishness can drive a person toward betrayal and destruction. Conversely, the story of the Widow of Zarephath serves as a model for seeking eternal food, demonstrating that acts of sacrificial love and brotherly service result in divine abundance and life. Ultimately, the message serves as a call to prioritize spiritual labor over worldly gain to secure a legacy that transcends physical expiration.