If a man is justified by the works of the Law,
. . . then why did Christ die on the cross? His death, burial and resurrection are the key truths of the gospel. We are saved by faith in Christ (He died for us). We live by faith in Christ (He lives in us). Furthermore, we are so identified with Christ by the Spirit that we died with Him (see Romans 6). This means that we are dead to the Law.
We have been "raised to walk in newness of life" and don't need the "help" of the Law. To go back to the Law is to "set aside" the grace of God.
Ephesians 2:8-9 For by grace are ye saved through faith; and that not of yourselves; it is the gift of God; not of works, lest any man should boast.
The only Gospel that saves is the Gospel of the grace of God as revealed in Jesus Christ -- not Law and grace.
Liberty in Christ isn't a license to sin, but its enjoying freedom in Him as we submit to His will for our lives. We obey God because of love.
Are you trusting in your morality, good works, or religion to get you to heaven. A true Christian is one who trusts Christ alone