Who was Ahithophel?

Brother of insipidity or impiety, a man greatly renowned for his sagacity among the Jews. At the time of Absalom’s revolt he deserted David (Ps. 41:9; 55:12-14) and espoused the cause of Absalom (2 Sam. 15:12).

Ahithophel first appears in 2 Samuel 15:12. In this repository’s biblical text, this figure is associated with 17 verse mentions across 2 books, most notably 2 Samuel, 1 Chronicles.