Is That Really In The Bible?

Jesus said in Matthew 5:17, “Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.”  The thing Jesus said don’t think is the very thing that many Christians are thinking and that is that Jesus abolished the law. Just what did Jesus mean when He said, I came to fulfill the law?  Does this mean there is no moral obligation to the 10 commandments?