In the beginning God gave Adam authority over everything that God himself created. Adam lost that authority when he disobeyed God and ate fruit from the tree of good and evil. This caused Adam and Eve to be put out of The Garden of Eden and therefore having loss their provisions they had to work and take care of themselves. Adam and Eve had committed the first sin and their disobedience caused the whole world to be cursed. Jesus, the son of God, is the only one who is perfect and without sin. And therefore, He is the only one who could pay our penalty for sin and redeem us from the curse of the law. Some believers who have been made righteous by the blood of Jesus are still trying to keep the law because of wrong teaching. Understand this scripture “The law was given by Moses but Grace and truth came by Jesus Christ (John 1:17). No one could keep the law except Jesus. Because under the law if you broke one commandment you were guilty of them all. Jesus came and kept the law for us so that we could receive a new covenant. And that covenant is “Grace & Truth.
John 3:16 AMP
 For God so greatly loved and dearly prized the world that He even gave up His only begotten (unique) Son, so that whoever believes in (trusts in, clings to, relies on) Him shall not perish (come to destruction, be lost) but have eternal (everlasting) life.
John 17:17 AMP
 Sanctify them purify, consecrate, separate them for Yourself, make them holy by the Truth; Your Word is Truth.
Grace is not something that you can’t earn or deserve, it is a free gift. God’s Righteousness At Christ’s Expense.
Romans 5:17-21 AMP
 For if because of one man’s trespass (lapse, offense) death reigned through that one, much more surely will those who receive God’s overflowing grace (unmerited favor) and the free gift of righteousness putting them into right standing with Himself reign as kings in life through the one Man Jesus Christ (the Messiah, the Anointed One).  Well then, as one man’s trespass one man’s false step and falling away led to condemnation for all men, so one Man’s act of righteousness leads to acquittal and right standing with God and life for all men.  For just as by one man’s disobedience (failing to hear, heedlessness, and carelessness) the many were constituted sinners, so by one Man’s obedience the many will be constituted righteous (made acceptable to God, brought into right standing with Him).  But then Law came in, only to expand and increase the trespass making it more apparent and exciting opposition. But where sin increased and abounded, grace (God’s unmerited favor) has surpassed it and increased the more and superabounded,  So that, just as sin has reigned in death, so grace (His unearned and undeserved favor) might reign also through righteousness (right standing with God) which issues in eternal life through Jesus Christ (the Messiah, the Anointed One) our Lord.