Magi...Those were no kings.
They were wise men.
Wise men can do without entourage.
“There should not be found in you anyone...who employs divination, anyone practicing magic, anyone who looks for omens, a sorcerer, anyone binding others with a spell, anyone who consults a spirit medium or a fortune-teller, or anyone who inquires of the dead. For whoever does these things is detestable to Jehovah." Deuteronomy 18:10-12
The word Magi comes from the greek word 'magos' (where the english word 'magic' comes from). Magos itself comes from the old persian word 'Magupati'. This was the title given to priests in a sect of the ancient Persian religions such as Zoroastrianism. Today we'd call them astrologers. Back then astronomy and astrology were part of the same overall studies (and 'science') and went hand in hand with each other. The magi would have followed the patterns of the stars religiously.
The Christmas Story - All About The Wise Men
The History of the Christmas Story - Who were the Wisemen or Magi? What did they see in the sky? Why did they bring such strange presents for a baby?
www.whychristmas.com