Kings III 1:18

18 And now, behold, Adonias reigns, and thou, my lord, O king, knowest not.

Kings III 1:18 In-Context

16 And Bersabee bowed, and did obeisance to the king; and the king said, What is thy request?
17 And she said, My lord, thou didst swear by the Lord thy God to thine handmaid, saying, Thy son Solomon shall reign after me, and shall sit upon my throne.
18 And now, behold, Adonias reigns, and thou, my lord, O king, knowest not.
19 And he has sacrificed calves and lambs and sheep in abundance, and has called all the king's sons, and Abiathar the priest and Joab the commander-in-chief of the host; but Solomon thy servant he has not called.
20 And thou, my lord, O king, —the eyes of all Israel upon thee, to tell them who shall sit upon the throne of my lord the king after him.

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