Matthew Poole and continuators on 2 Samuel 17:18

18 Nevertheless, a lad saw them , and told Absalom, but they went both of them away quickly , and came to a mans house in Bahurim, which had a well in his court, whither they went down .

Who knew them to be favourers of David, and observed them to wait there upon design, and to gain intelligence, and possibly saw the Wench speaking privately to them.

Suspecting by this Lads observation and carriage, that they were discovered.

Either to some hole in the side of the Pit: or, to the bottom of the Pit, it being then dry, as Pits often were in those hot Countries. And this being in so open a place, they concluded none would imagine them to be hid there. And besides, they relied upon Gods good Providence, which they knew watched over David, and them for his sake.