2 Samuel 3:6

And it came to pass, while there was war between the house of Saul and the house of David, that Abner made himself strong for the house of Saul.

It happened, while there was war between the house of Saul and the house of David, that Abner made himself strong in the house of Saul.

And it came to pass, while there was war between the house of Saul and the house of David, that Abner made himself strong in the house of Saul.

And it cometh to pass, in the war being between the house of Saul and the house of David, that Abner hath been strengthening himself in the house of Saul,

During the war between the house of Saul and the house of David, Abner had continued to strengthen his position in the house of Saul.