1Kgs.11.27

And this was the cause that he lifted up his hand against the king: Solomon built Millo, and repaired the breaches of the city of David his father.

1Kgs.11.27

This is why he rebelled. Solomon had built the outer defense system (the Millo) and had restored the fortifications that were in disrepair from the time of his father David.

1Kgs.11.27

Here is the account of how he rebelled against the king: Solomon had built the supporting terraces and had filled in the gap in the wall of the city of David his father.

1Kgs.11.27

And this is what caused him to rebel against the king: Solomon had built the Millo and repaired the damages to the City of David his father.