'Advice' in the Bible

Then Absalom said to Ahithophel, "Give your advice. What shall we do?"

I give the advice that all of Israel from Dan to Beersheba should be completely gathered to you, as the sand which [is] on the seashore for abundance, with {you personally} going into the battle.

Then Absalom and all the men of Israel said, "The advice of Hushai the Arkite [is] better than the advice of Ahithophel." (Now Yahweh had ordained to frustrate the good counsel of Ahithophel in order for Yahweh to bring misery upon Absalom).

When Ahithophel saw that his advice [was] not followed, he saddled the donkey, and he set out and went up to his house in his city. {After he set his house in order}, he hanged himself, and he died and was buried in the tomb of his ancestors.