The term "high priest" refers to an office in the Melchizedek Priesthood. Men must be ordained high priests to serve as bishops, on high councils, or in stake presidencies, or as General Authorities (see
High Council;
Priesthood). Stake presidents may ordain high priests for other reasons as well.
https://eom.byu.edu/index.php/High_Priest
The Melchizedek Priesthood is one of the “orders” of priesthood in The Church of Jesus Christ of Latter-day Saints (Mormon Church). It is referred to as the “high priesthood of the holy order of God” (Alma 4:20, 13:8) or simply as the “high priesthood.” This priesthood was restored to the Prophet Joseph Smith and Oliver Cowdery in the spring of 1829 at the hands of the resurrected Peter, James, and John.In the Mormon Church, the Melchizedek Priesthood is given to worthy male members 18 years and older who have been members of the Church for over one year. Ordination is based on the person’s age and moral worthiness without regard to training, knowledge, or aptitude.
Melchizedek Priesthood
The priesthood as practiced by the LDS church is more akin to the practices of the Masonic Lodge, not the biblical gospel or teachings of Jesus, the apostles or early church...
Mormonism, Masonry, and their Related Temple Rituals
I participated in Mormon Temple work for over twenty years as a Mormon. I did not realize that I was actually involved in gnostic, occult pagan worship. Joseph Smith, the founder of Mormonism became a Mason in 1842. He stated “I was with the Masonic Lodge and rose to the sublime degree.” He introduced the Mormon temple ceremony less than two months later (
Tanner 490).
Mormonism, Masonry, and their Related Temple Rituals - Sword Cross and Crown