'Guardians' in the Bible

Now Ahab had seventy sons in Samaria. And Jehu wrote letters and sent them to Samaria, to the rulers of Jezreel, the elders, and to the guardians of the children of Ahab, saying,

And the one who was over the household, and he who was over the city, the elders, and the guardians of the children, sent word to Jehu, saying, “We are your servants, all that you say to us we will do, we will not make any man king; do what is good in your sight.”

“Kings will be your guardians,And their princesses your nurses.They will bow down to you with their faces to the earthAnd lick the dust of your feet;And you will know that I am the Lord;Those who hopefully wait for Me will not be put to shame.

but he is under guardians and managers until the date set by the father.