Charles Ellicott Commentary Deuteronomy 5:21

"Neither shalt thou covet thy neighbor`s wife; neither shalt thou desire thy neighbor`s house, his field, or his man-servant, or his maid-servant, his ox, or his ass, or anything that is thy neighbor`s." — Deuteronomy 5:21 (ASV)

His field. These words are not found in Exodus 20:17. The children of Israel had now become, or were just about to become, landowners; therefore, the addition is appropriate here. There is also another slight verbal alteration. One word only is used for “covet” in Exodus 20:17; here two are used. The meaning of the one is to “delight in,” and the other to “lust after.”