What does the tenth commandment require of us?
That even the smallest inclination or thought contrary to any of God's commandments never rise in our hearts, but that at all times we hate all sin with our whole heart and delight in all righteousness.
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But can those who are converted to God perfectly keep these commandments?
No, but even the holiest men while in this life have only a small beginning of this obedience, yet so that with a sincere resolution they begin to live not only according to some but all the commandments of God.
Why does God have the Ten Commandments preached so strictly when no one can keep them perfectly in this life?
First, that throughout our lives we may learn more and more to know our sinful nature and thus become the more earnest in seeking the forgiveness of sin and righteousness in Christ; likewise that we constantly endeavour and pray to God for the grace of the Holy Spirit that we may become more and more in conformity with the image of God till we arrive at the perfection promised to us in a life to come.