Did Jesus make the Old Testament Law obsolete?

No. There is nothing wrong with the law. The law is perfect. It is peoples’ interpretation that is wrong. The law was so perfect that it seemed open to interpretation. But Jesus explained the practical application and interpretation of the law. This was the Messiah’s work. 

The Samaritan woman at the well said when the Messiah comes, he will explain all things and Jesus said “I am he”. Now, we don’t have to do this work anymore. To righteously apply the law, we just have to have faith in Jesus’ interpretation of the law. This is what it means to have faith and not works. Jesus said he came to fulfill the law, not to abolish it. His teachings show us how to fulfill the law.

Romans 3:31Do we, then, nullify the law by this faith? Not at all! Rather, we uphold the law.

Jesus came to show us how to righteously uphold the law through having faith in his interpretation.