To be high or to lift up — applied to God's exaltation, the lifting up of prayer and praise, and the pride of the wicked. God himself is rum: high and exalted above all.
Pride and exaltation diverge: God's rum is true majesty; human self-exaltation is pride heading for a fall (Prov 16:18 uses related root). The proper response to God's exaltation is worship.
Isaiah 6:1 — the inaugural vision of Isaiah — opens with God's exaltation (rum). This becomes the standard against which human pretension collapses and the foundation for prophetic proclamation of God's sovereignty.