Contradiction with 1 John 3:4
Sin is defined as the transgression of the law, implying sin exists with or without the law.
1 John 3:4: Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
Contradiction with James 4:17
Sin occurs when someone knows the good they ought to do and doesn't do it, irrespective of having a formal law.
James 4:17: Therefore to him that knoweth to do good, and doeth [it] not, to him it is sin.
Contradiction with Psalm 51:5
Sin is present from birth, indicating it exists inherently prior to and beyond the acknowledgment of law.
Psalm 51:5: Behold, I was shapen in iniquity; and in sin did my mother conceive me. [conceive...: Heb. warm me]
Contradiction with Romans 2:12
Those without the law sin and perish, demonstrating sin doesn't depend on having a law.
Romans 2:12: For as many as have sinned without law shall also perish without law: and as many as have sinned in the law shall be judged by the law;
Contradiction with Genesis 6:5
God saw wickedness in humanity long before Mosaic Law, indicating sin's existence before the law.
Genesis 6:5: And GOD saw that the wickedness of man [was] great in the earth, and [that] every imagination of the thoughts of his heart [was] only evil continually. [every...: or, the whole imagination: the Hebrew word signifieth not only the imagination, but also the purposes and desires] [continually: Heb. every day]