O God (o qeo). This quotation (the fifth) is from Psalms 45:7 . A Hebrew nuptial ode (epiqalamium) for a king treated here as Messianic. It is not certain whether o qeo is here the vocative (address with the nominative form as in John 20:28 with the Messiah termed qeo as is possible, John 1:18 ) or o qeo is nominative (subject or predicate) with estin (is) understood: "God is thy throne" or "Thy throne is God." Either makes good sense. Sceptre (rabdo). Old word for walking-stick, staff ( Hebrews 11:21 ).