Between March 7th and October 17th in 1954, Hugh Nibley delivered a series of 30 weekly lectures on KSL Radio that were also published as pamphlets. The series called “Time Vindicates the Prophets” was given in answer to those who were challenging the right of members of the Church of Jesus Christ of Latter-day Saints to call themselves Christians.
This lecture was reprinted in Immortality: Famed Discourses on Eternal Progression and Future Existence and The World and the Prophets, Collected Works of Hugh Nibley vol. 3.
All 30 recordings are available immediately in the Complete Bibliography for Hugh Nibley (CBHN) at https://interpreterfoundation.org/bibliographies/hugh-w-nibley/lectures/