You shall not covet your neighbor's house, you shall not covet your neighbor's wife, nor his manservant, nor his maidservant, nor his ox, nor his donkey, nor any thing that is your neighbor's.
All Commentaries on Exodus 20:17 Go To Exodus 20
Augustine of Hippo
AD 430
The law said, “You shall not covet,” in order that, when we find ourselves lying in this diseased state, we might seek the medicine of grace. By that commandment [we might] know both in what direction our endeavors should aim as we advance in our present mortal condition and to what a height it is possible to reach in the future immortality. For unless perfection could somewhere be attained, this commandment would never have been given to us.