and this is the account of his rebellion against the king. Solomon had built the supporting terraces and repaired the gap in the wall of the city of his father David.
KJV
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.
ASV
And this was the reason why he lifted up his hand against the king: Solomon built Millo, and repaired the breach of the city of David his father.