Psalm 99 magnifies the preeminent attribute of God as the song proclaims the holiness of Yahweh. This is the 7th of 8 'Yahweh is King' songs in this section of the Psalter, a fitting addition to the catalogue of anthems exalting the magnificent sovereignty of our God. Ps 99 demonstrates the holiness of God is better appreciated in light of revelation displaying this attribute, than merely noting a definition. The Lord has communicated His holiness through the burning bush calling of Moses. Moses removed his shoes, he witnessed the aseity of God displayed in fiery theophany, he trembled before the voice of God as he witnessed His power and glory. The holy of holies was the most guarded place on earth, defended from all save one consecrated priest. Blood atonement alone secured entry and audience with the Holy One. The mount of transfiguration shook with the voice from heaven affirming the Son of God who shone with the light of pre-incarnate glory eclipsing the greatest of prophets and law-givers of old. His disciples are stunned yet again in the presence of holiness which overwhelmed them at times with awe, at times with fear, at times with anguish of their own unworthiness. The visions of John, the judgements of our Lord's coming, the miracles of the incarnate Christ, the revelations and theophanies of the Old Testament all communicate the greater context of God's glory.... Here in Ps 99, the author joins the chorus of the throne room seraphim in Isaiah's vision echoing with 3 fold ascending praise: “Holy is he, holy is He, The Lord our God is holy!”.