King James Version
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.English Standard Version
When he began to reign, as soon as he had seated himself on his throne, he struck down all the house of Baasha. He did not leave him a single male of his relatives or his friends.New International Version
As soon as he began to reign and was seated on the throne, he killed off Baasha's whole family. He did not spare a single male, whether relative or friend.