The Lord promised early Latter-day Saints an endowment of power that began at the Kirtland Temple in 1836. It was a time of great spiritual outpourings and the receipt of power from on high. However, the “Kirtland endowment” didn’t explicitly refer to rituals and ordinances. For example, it wasn’t until 1842 that Joseph Smith introduced “the endowment” that gave rise to the ceremony familiar to modern church members. Scott Woodward explains more about what the Kirtland endowment was in this interview.