2 Samuel 17:17-20

17Now Jonathan and Ahimaaz stayed at En Rogel, for they dared not be seen coming into the city; so a female servant would come and tell them, and they would go and tell King David.

18Nevertheless a lad saw them, and told Absalom. But both of them went away quickly and came to a man’s house in Bahurim, who had a well in his court; and they went down into it.

19Then the woman took and spread a covering over the well’s mouth, and spread ground grain on it; and the thing was not known.

20And when Absalom’s servants came to the woman at the house, they said, “Where are Ahimaaz and Jonathan?” So the woman said to them, “They have gone over the water brook.” And when they had searched and could not find them, they returned to Jerusalem.