18:4 seven thousand. The parallel record (II Samuel 8:4) says David took seven hundred horsemen, instead of seven thousand. The other numbers in the two verses all agree. Apparently there has been a copyist error in one of them, and the correct reading is probably the one given here, as being more in line with the others. But see note on II Samuel 8:4.

18:4 houghed. See note on Joshua 11:6.