Verses with the word kings' in the Old Testament (3 verses):

Psalms 45:9
Kings' daughters were among thy honourable women: upon thy right hand did stand the queen in gold of Ophir.

Proverbs 30:28
The spider taketh hold with her hands, and is in kings' palaces.

Daniel 11:27
And both of these kings' hearts shall be to do mischief, and they shall speak lies at one table; but it shall not prosper: for yet the end shall be at the time appointed.