8909. Verse 17 You shall not covet your neighbour's house; you shall not covet your neighbour's wife, nor his male slave nor his female slave, nor his ox nor his ass, nor anything that is your neighbour's means that one must be on one's guard against self-love and love of the world, and so one must take care to prevent the evils contained in the preceding commandments from becoming present in the will and consequently going out of it.

10301. 'Pure' means devoid of evil. This is clear from the meaning of 'pure' as devoid of evil. Because all evil is impure, and all good is pure, the expression 'being purified' from sins and from iniquities is used. And it has regard to the heart, that is, the will; for the will is meant in the Word by 'the heart', 2930, 7542, 8910, 9300, 9495, since love is meant by it, 3883-3896, 9050.