Should Christians still labor under the old system of the Law?

Les explains that when we were in the flesh, the motions of sins which were by the Law worked in our members to bring forth fruit unto death. Every time the Jew turned around, the Law condemned him and constantly put him down as guilty. But now, as a result of the Gospel, believers are delivered from the Law, that being dead wherein we were held, so that we should serve in newness of spirit and not in the oldness of the letter. Les says we are not to be laboring under that old system of Law which is now crucified, dead, gone as far as God is concerned. He also notes the veil that was never taken away for Israel, because they could never understand that the Law was now finished and done, which is why they are still trying to keep it today.