The Shrutis say that in crowning a king, it is Indra that is crowned in the person of the king. A person, who seeks his own prosperity, should adore the king as he should adore Indra himself.
इन्द्रमेव प्रवृणुते यद्राजानमिति श्रुतिः। यथैवेन्द्रस्तथा राजा सम्पूज्यो भूतिमिच्छता॥