Hymn 21.
21 The first priest and first king, even as if depicted each in the other, were balanced as if in scales. So too Valgesh and so too the son of that king, for they were gentle and calm. May these latter be like each to other; the priests be shining lights, the king be glowing lights, likewise illustrious judges! R., Blessed be He Who has enlightened our souls!
22. From the king's office laws, and from the priest's office propitiations. That both should be mild is hateful; that both should be strong is grievous. Let one be strong and one be tender; in prudence and in discretion, let fear with mercy be mingled. Let our priesthood be tender, likewise our king strong. R., Blessed be He Who has mingled our helps!
23. Let the priests pray for the kings, that they may be a wall to mankind! From beside the kings be victory; and from beside the priests faith! May victory save our bodies, and faith our souls! May kings put an end to war; priests put an end to strife! May disputing and quarrelling cease! R., Blessed be the Son of Him Who gives peace to all! Praise to You for Your gift!
Source: Nisibene Hymns (New Advent)