Catechisma

Q14. What is sin?

Sin is any want of conformity unto, or transgression of, the law of God.

Scripture Proofs — King James Version

1

1 John 3:4

Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.

James 4:17

Therefore to him that knoweth to do good, and doeth it not, to him it is sin.

CommentaryThomas Vincent (1674)

Question 1. What is meant by the law of God which sin is a breach of?

Answer. By the law of God, is meant the commandments which God the Creator, and supreme King and lawgiver hath laid upon all the children of men, his creatures and subjects, as the rule of their obedience.

Question 2. Where is the law of God to be found.