Kings III 11:21

21 And Ader heard in Egypt that David slept with his fathers, and that Joab the captain of the host was dead; and Ader said to Pharao, Let me go, and I will return to my country.

Kings III 11:21 In-Context

19 And Ader found great favour in the sight of Pharao, and he gave him his wife's sister in marriage, the elder sister of Thekemina.
20 And the sister of Thekemina bore to him, to Ader, Ganebath her son; and Thekemina brought him up in the midst of the sons of Pharao, and Ganebath was in the midst of the sons of Pharao.
21 And Ader heard in Egypt that David slept with his fathers, and that Joab the captain of the host was dead; and Ader said to Pharao, Let me go, and I will return to my country.
22 And Pharao said to Ader, What lackest thou with me? that lo! thou seekest to depart to thy country? and Ader said to him, By all means let me go.
23 So Ader returned to his country; this the mischief which Ader did, and he was a bitter enemy of Israel, and he reigned in the land of Edom.

The Brenton translation of the Septuagint is in the public domain.