2 Samuel 17:13-17

And if he withdraws into a city, then all Israel shall bring ropes to that city, and we will drag it into the valley until not even a pebble is found there.”

Then Absalom and all the men of Israel said, “The advice of Hushai the Archite is better than the advice of Ahithophel.” For the Lord had ordained to foil the good advice of Ahithophel, in order for the Lord to bring disaster on Absalom. Hushai’s Warning Saves David

Then Hushai said to Zadok and to Abiathar the priests, “This is what Ahithophel advised Absalom and the elders of Israel to do, and this is what I have advised.

Now then, send a messenger quickly and tell David, saying, ‘Do not spend the night at the river crossing places of the wilderness, but by all means cross over, or else the king and all the people who are with him will be destroyed.’ ”

Now Jonathan and Ahimaaz were staying at En-rogel, and a female servant would go and inform them, and they would go and inform King David, for they could not allow themselves to be seen entering the city.