Romans 3:19-20 King James Version (KJV)
19 Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God. 20 Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
Law is a rule of conduct or action prescribed or formally recognized as binding or enforced by a controlling authority. Grace is an act or instance of kindness,courtesy or clemency.
All are guilty before God under the Law. It is because of God’s act of kindness/clemency that we are able to repent of our wrong doing and still be blessed.
If there were no laws, there would be no need for grace. We are still required to obey the laws. The laws of God still apply today.
Picture is from http://crosswaychurchma.blogspot.com