Absalom and all the men of Israel were infatuated by a Divine power, and given up to believe lies and mistakes. The Lord had appointed to defeat the good counsel; so it was, politically considered; being the wisest and most effectual course to accomplish Absalom's end.
Related Commentaries of 2 Samuel 17:14
2 Samuel 17:14
14 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 appointede to defeat the good counsel of Ahithophel, to the intent that the LORD might bring evil upon Absalom.