The Sifting of the Wicked
Verses 8, and verses 26, 28 refer to a king, one whose authority in that day was absolute, sitting on a throne of judgment to sift people as grain is sifted to separate the chaff.
Vs. 8 declares that the scattering away of all evil is accomplished with the eyes of the king. This suggests the judge of all forecast in 1 Samuel 2:10; Psalms 96:10-13; Romans 2:16; Acts 17:31. There is an eye that misses nothing; the wicked need to take note and seek forgiveness, Romans 4:1-8.
Vs. 26 identifies the action as sifting the wicked by using as an illustration the threshing terms: scattereth (winnoweth) and wheel (rough cart used in winnowing).
Vs. 28 suggests that mercy (loving kindness) and truth sustain the true king and his throne. All who have by faith claimed His covenant blessings can rejoice that their sins are forgiven, Romans 4:1-8.