Through The Law - Romans 3:19-20

Romans 3:19-20 NASB 

Now we know that whatever the Law says, it speaks to those who are under the Law, so that every mouth may be closed and all the world may become accountable to God; because by the works of the Law no flesh will be justified in His sight for through the Law comes the knowledge of sin.

The Law is given to Israel and the whole world becomes accountable. This may remind us of the tree of the knowledge of good and evil that grew in the Garden of Eden. It was in the Garden from the beginning, as was the tree of life. The creation account lays the foundation and blueprint of God's plan and purpose for man. 

It is the way we are justified. Through the law we discover sin. Only then are we able to separate light from darkness and begin moving toward the light. 

God chooses those who choose Him. He knew this from the beginning. The end will be a new creation and we will enter His rest. He sees this as well. 

And it is very good.