The judgement phase is perhaps better explained here as the just deserts of the remnant of the house of Israel represented by Lehi's seed. Their judgement is the entry of the Gentiles, and the domination by the Gentiles. To place this event in its redemptive place, the messenger notes that the function of placing the Gentiles in this position is to bring forth the Gospel through them. Note the repetition of the phrase "plain and precious." That which was lost is being restored to them. The truth they desired and lacked will be given to them.