Mormon, preaching to a mixed audience of shalems and non-shalems, uses shalem imagery to communicate hidden layers to part of his audience. All good things come from God. They come from God in Christ. Lay hold upon the good things, and you become a child of Christ. This happens by faith (which is how the brother of Jared got through the veil) and the ministering of angels.
This same image is used by John. As many as "took hold of" Jesus (elabon in Greek) became the sons of God.
This imagery shows us the shalem grasping the high priest after the order of Melchizedek to be pulled behind the veil and into the Holy of Holies.