18 But now Adonijah has become king, and you, my lord the king, do not know about it.

Read 1 Kings 1:18 Using Other Translations

And now, behold, Adonijah reigneth; and now, my lord the king, thou knowest it not:
And now, behold, Adonijah is king, although you, my lord the king, do not know it.
But instead, Adonijah has made himself king, and my lord the king does not even know about it.