1 Kings 11:30

30 Then Ahijah took hold of the new cloak he had on, tore it into 12 pieces,

1 Kings 11:30 Meaning and Commentary

1 Kings 11:30

And Ahijah caught the new garment that was on him
This looks as if it was Jeroboam's garment, having got a new one to appear before the king in; though the sense may be this, that the prophet took hold of his own garment that was upon himself:

and rent it in twelve pieces;
as symbolical of the twelve tribes of Israel.

1 Kings 11:30 In-Context

28 Now the man Jeroboam was capable, and Solomon noticed the young man because he was getting things done. So he appointed him over the entire labor force of the house of Joseph.
29 During that time, the prophet Ahijah the Shilonite met Jeroboam on the road as Jeroboam came out of Jerusalem. Now Ahijah had wrapped himself with a new cloak, and the two of them were alone in the open field.
30 Then Ahijah took hold of the new cloak he had on, tore it into 12 pieces,
31 and said to Jeroboam, "Take 10 pieces for yourself, for this is what the Lord God of Israel says: 'I am about to tear the kingdom out of Solomon's hand. I will give you 10 tribes,
32 but one tribe will remain his because of my servant David and because of Jerusalem, the city I chose out of all the tribes of Israel.
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.