NET
6 Your throne, O God, is permanent. The scepter of your kingdom is a scepter of justice.
Darby
6 Thy throne, O God, is for ever and ever; a sceptre of uprightness is the sceptre of thy kingdom:
KJV
6 Thy throne, O God, [is] for ever and ever: the sceptre of thy kingdom [is] a right sceptre.