Verily in the beginning this was Brahman, one only. That being one, was not strong enough. It created still further the most excellent Kshatra (power), viz. those Kshatras (powers) among the Devas,—Indra, Varuna, Soma, Rudra, Parganya, Yama, Mrityu, Isana. Therefore there is nothing beyond the Kshatra, and therefore at the Ragasuya sacrifice the Brahmana sits down below the Kshatriya. He confers that glory on the Kshatra alone. But Brahman is (nevertheless) the birth-place of the Kshatra. Therefore though a king is exalted, he sits down at the end (of the sacrifice) below the Brahman, as his birth-place. He who injures him, injures his own birth-place. He becomes worse, because he has injured one better than himself.

In plain words: At first Brahman was alone and not strong enough. So it created rulers and powerful gods like Indra, Varuna and Yama. That is why kings rank so high, and why the priest sits below the king at the royal crowning ceremony. Yet priestly wisdom is where royal power comes from, so a king who harms a priest harms his own source and becomes worse.