The Last Will and Testament of Jesus is the Great Commission found in Matthew 28. It is to evangelize and to make disciples everywhere, to do all of the things that Jesus did, teach the ways He taught, command the way He commanded, live the way He lived, to do just like Him by the power of the Holy Spirit.
In our society the respect for mans’ last will and testament is taken seriously and lawfully where as the Last Will and Testament of Jesus Christ is disregarded and not taken seriously. I think that it is because we have not grasp the “Kingdom concept” of our Lord Jesus Christ. If He were our King, we would “obey” Him.