The thing concerning many doctrines which show a clear misunderstanding of Christianity is the priesthood. All who have access to the Holiest of All/Holy of Holies are Christian/Everlasting Priesthood. The two are the same. If a doctrine tries to separate the priesthood and christians by calling them two parts, the doctrine is incorrect. If we do not have access to the Holiest of All, then we are not sealed.
Joh_6:27 Labour not for the meat which perisheth, but for that meat which endureth unto everlasting life, which the Son of man shall give unto you: for him hath God the Father sealed.
2Co_1:22 Who hath also sealed us, and given the earnest of the Spirit in our hearts.
Eph_1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Eph_4:30 And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.