Smith, Joseph - 04 The beginnings of the Priesthood of Melchizedek
Type of Spiritual Experience
Melchizedek, Melchisedech, Melkisetek, or Malki Tzedek (Hebrew: מַלְכִּי־צֶדֶֿק malkī-ṣeḏeq, "king of righteousness"; Amharic: መልከ ጼዴቅ malkī-ṣeḏeq; Armenian: Մելքիսեդեք, Melkisetek), was the king of Salem and priest of El Elyon (often translated as "most high God ") mentioned in the 14th chapter of the Book of Genesis. He brings out bread and wine and then blesses Abram and El Elyon.
Chazalic literature—specifically Targum Jonathan, Targum Yerushalmi, and the Babylonian Talmud—presents the name מלכי־צדק)) as a nickname title for Shem, the son of Noah.
In Christianity, according to the Epistle to the Hebrews, Jesus Christ is identified as "High priest forever in the order of Melchizedek"
A description of the experience
Pearl of Great Price: Joseph Smith - History: Chapter 1
In May, 1829, we on a certain day went into the woods to pray and inquire of the Lord respecting baptism for the remission of sins, that we found mentioned in the translation of the plates. While we were thus employed, praying and calling upon the Lord, a messenger from heaven descended in a cloud of light, and having laid his hands upon us, he ordained us, saying:
69 Upon you my fellow servants, in the name of Messiah, I confer the Priesthood of Aaron, which holds the keys of the ministering of angels, and of the gospel of repentance, and of baptism by immersion for the remission of sins; and this shall never be taken again from the earth until the sons of Levi do offer again an offering unto the Lord in righteousness.
70 He said this Aaronic Priesthood had not the power of laying on hands for the gift of the Holy Ghost, but that this should be conferred on us hereafter; and he commanded us to go and be baptized, and gave us directions that I should baptize Oliver Cowdery, and that afterwards he should baptize me.
71 Accordingly we went and were baptized. I baptized him first, and afterwards he baptized me - after which I laid my hands upon his head and ordained him to the Aaronic Priesthood, and afterwards he laid his hands on me and ordained me to the same Priesthood - for so we were commanded.*
72 The messenger who visited us on this occasion and conferred this Priesthood upon us, said that his name was John, the same that is called John the Baptist in the New Testament, and that he acted under the direction of Peter, James and John, who held the keys of the Priesthood of Melchizedek, which Priesthood, he said, would in due time be conferred on us, and that I should be called the first Elder of the Church, and he (Oliver Cowdery) the second. It was on the fifteenth day of May, 1829, that we were ordained under the hand of this messenger, and baptized.
73 Immediately on our coming up out of the water after we had been baptized, we experienced great and glorious blessings from our Heavenly Father. No sooner had I baptized Oliver Cowdery, than the Holy Ghost fell upon him, and he stood up and prophesied many things which should shortly come to pass. And again, so soon as I had been baptized by him, I also had the spirit of prophecy, when, standing up, I prophesied concerning the rise of this Church, and many other things connected with the Church, and this generation of the children of men. We were filled with the Holy Ghost, and rejoiced in the God of our salvation.
74 Our minds being now enlightened, we began to have the scriptures laid open to our understandings, and the true meaning and intention of their more mysterious passages revealed unto us in a manner which we never could attain to previously, nor ever before had thought of. In the meantime we were forced to keep secret the circumstances of having received the Priesthood and our having been baptized, owing to a spirit of persecution which had already manifested itself in the neighborhood.