Emperor Constantine at the opening of the Council of Nicaea (325 AD) quoted Psalm 82:6 to remind the bishops that their high office should raise them above jealousy and party feeling.
The term 'God' was applied to people of power, authority and rule who were considered to have greater nearness to God than others - an appellation which implies that you are God's representatives on earth, and that your decision is, in an important sense, to be regarded as his.