2 Samuel 17:17-21

¹⁷Now Jonathan and Ahim'a-az were waiting at En-ro'gel; a maidservant used to go and tell them, and they would go and tell King David; for they must not be seen entering the city. ¹⁸But a lad saw them, and told Ab'salom; so both of them went away quickly, and came to the house of a man at Bahu'rim, who had a well in his courtyard; and they went down into it. ¹⁹And the woman took and spread a covering over the well's mouth, and scattered grain upon it; and nothing was known of it. ²⁰When Ab'salom's servants came to the woman at the house, they said, "Where are Ahim'a-az and Jonathan?" And the woman said to them, "They have gone over the brook of water." And when they had sought and could not find them, they returned to Jerusalem.

²¹After they had gone, the men came up out of the well, and went and told King David. They said to David, "Arise, and go quickly over the water; for thus and so has Ahith'ophel counseled against you."