Adam, Who is He, pg. 9; “Adam received the holy priesthood and was commanded by the Lord to teach his children the principles of the gospel. Moreover, Adam was baptized for the remission of his sins, for the same principles by which men are saved now were the principles by which men were saved in the beginning. In that day as many as repented and were baptized received the gift of the Holy Ghost by the laying on of hands. Adam made all these things known to his sons and daughters.” (Doctrines of Salvation, Bookcraft, 1956, 3:81-82.)”
The word “gospel” is a Greek word meaning “good news”, originating in 950 AD. “Baptize” is also a Greek word meaning “to immerse” from the 13th century AD. How could Adam be baptized, hold the priesthood and teach the gospel?