We find the 10 Commandments given to Moses (Exodus 20) fulfilled and overshadowed by the 2 Commandments of Jesus Christ (Matthew 22:37-40). God says that those who fear and love God will obey His commands. Obeying the law was impossible in the flesh, through fear. The entire Old Testament proves that. Obeying the commands of God is only possible with the Holy Spirit, through love. The OT gives us the law of sin and death, Jesus gives us the law of spirit and life. (Romans 8:2) For the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. The OT tells us what is right while Jesus and the Holy Spirit equip us to do it. The OT law gives us condemnation, Jesus gives us grace and mercy. (John 1:17) For the law was given through Moses; grace and truth came through Jesus Christ. OT law isolates people from one another in sin, love brings us together. The law is made weak by flesh, love is made strong by the spirit. (Romans 8:3-4) For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh, in order that the righteous requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit.
“Rules without relationship leads to rebellion.” -Josh McDowell