WSC Q39-42 & 82-84
Q. 39. What is the duty which God requireth of man?
A. The duty which God requireth of man, is obedience to his revealed will.
Q. 40. What did God at first reveal to man for the rule of his obedience?
A. The rule which God at first revealed to man for his obedience, was the moral law.
Q. 41. Wherein is the moral law summarily comprehended?
A. The moral law is summarily comprehended in the ten commandments.
Q. 42. What is the sum of the ten commandments?
A. The sum of the ten commandments is, to love the Lord our God with all our heart, with all our soul, with all our strength, and with all our mind; and our neighbor as ourselves.
Q. 82. Is any man able perfectly to keep the commandments of God?
A. No mere man, since the fall, is able in this life perfectly to keep the commandments of God, but doth daily break them in thought, word, and deed.
Q. 83. Are all transgressions of the law equally heinous?
A. Some sins in themselves, and by reason of several aggravations, are more heinous in the sight of God than others.
Q. 84. What doth every sin deserve?
A. Every sin deserveth God's wrath and curse, both in this life, and that which is to come.