2 Samuel 15:12
"And Absalom sent for Ahithophel the Gilonite, David’s counsellor, from his city, even from Giloh, while he offered sacrifices. And the conspiracy was strong; for the people increased continually with Absalom."
Cross References (ranked by relevance)
And one told David, saying, Ahithophel is among the conspirators with Absalom. And David said, O LORD, I pray thee, turn the counsel of Ahithophel into foolishness.
Yea, mine own familiar friend, in whom I trusted, which did eat of my bread, hath lifted up his heel against me.
And Goshen, and Holon, and Giloh; eleven cities with their villages:
They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.
They proclaimed a fast, and set Naboth on high among the people.
And when Ahithophel saw that his counsel was not followed, he saddled his ass, and arose, and gat him home to his house, to his city, and put his household in order, and hanged himself, and died, and was buried in the sepulchre of his father.
And Absalom and all the men of Israel said, The counsel of Hushai the Archite is better than the counsel of Ahithophel. For the LORD had appointed to defeat the good counsel of Ahithophel, to the intent that the LORD might bring evil upon Absalom.
And Balaam said unto Balak, Build me here seven altars, and prepare me here seven oxen and seven rams.
And Ahithophel was the king’s counsellor: and Hushai the Archite was the king’s companion:
The sacrifice of the wicked is abomination: how much more, when he bringeth it with a wicked mind?
And he brought him into the field of Zophim, to the top of Pisgah, and built seven altars, and offered a bullock and a ram on every altar.
And she wrote in the letters, saying, Proclaim a fast, and set Naboth on high among the people:
And Balak did as Balaam had said, and offered a bullock and a ram on every altar.
I speak not of you all: I know whom I have chosen: but that the scripture may be fulfilled, He that eateth bread with me hath lifted up his heel against me.