1 Kings 2:13

And Adonijah the son of Haggith came to Bath–sheba the mother of Solomon. And she said, Comest thou peaceably? And he said, Peaceably.

Cross-reference

1 Kings 1:5-10 shows Adonijah's earlier power grab — his 'peaceable' visit now is deeply suspicious given that history.

1 Kings 1:50-53 recounts Solomon's pardon of Adonijah — his return now may be testing the limits of that mercy.

2 Samuel 3:4 lists Adonijah as David's son by Haggith — providing background on the character who arrives here.