KJV
And it came to pass, when he began to
reign, as soon as he sat on his throne, [that] he slew all the house of
Baasha: he left him not one that pisseth against a wall, neither of his
kinsfolks, nor of his friends.
BSB
As soon as Zimri began to reign and was seated on the throne, he struck down the entire household of Baasha. He did not leave a single male, whether a kinsman or friend.