God didn't give Moses his Law in order to create sin where it didn't exist before, but to magnify the sin we were already committing, so that nobody could deny it. Once we are made aware of our sin by the witness of the written commandments, we are also made aware of our need for God's grace.
Romans 5:20-21
https://rumble.com/v43hjhr-sin....-grace-and-law-in-ro