While we are no longer under the law as far as practicing ordinances, tithing, and sacrifices, the moral law of God still abides. And the most important expression of the character of God in the law abides as well – self sacrifice.
We will have the blessing of heaven because Jesus DID live the perfect life. Jesus DID fulfill the law. We will live in glory because the righteous life of Jesus will be counted to us!
Luke turns our focus from the law to Christ. The law points to the righteousness of God, so it is important. However, Jesus is the fulfillment of that law for us.
Our focus should not be on earthy possession or comfort. These things are temporary.