The Ninth Commandment: Practise Purity of Heart (CCC 2514–2533)
You Shall Not Covet Your Neighbours’s Wife
The Ninth Commandment teaches us to guard ourselves against impurity of heart. The heart is the seat of moral acts, and the grace of the sacraments strengthens and preserves us from impurities of heart, mind and body. In the midst of a society that glorifies immodesty, indecency and sexual permissiveness, the Ninth Commandment challenges Christians. Through the practice of purity of heart, we become a countercultural sign.