No it was not,Why, because the Law was there from the beginning. Look at what God said to Cain...
Genesis 4:6-8 King James Version (KJV)
6 And the Lord said unto Cain, Why art thou wroth? and why is thy countenance fallen?
7 If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee shall be his desire, and thou shalt rule over him.
8 And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him.
Joh_1:17 For the law was given by Moses, but grace and truth came by Jesus Christ.
Rom 5:13 (For until the law sin was in the world: but sin is not imputed when there is no law.
why people want to be condemned by the law ill never know, But sin was in the world even untill the law came by Moses, So blind, than they will quote ....