The Law points to Jesus as it’s not possible to keep the Law perfectly out of our own ability. While it’s possible that with strict discipline we may not steal, kill or take God’s name in vein, everybody will covet. There is always somebody that has something that we would like. To put aside the Law and your own ability to keep it in order to put your faith in Jesus alone for your salvation shows that there are no works that you can do in order to attain salvation. It is only by Jesus payment on the cross.
Hebrews 7 shows us that Jesus was a High Priest after the order of Melchezedik, not the Aaronic priesthood and the Levetical system. All of the rituals, sacrifices and the Temple itself point to Jesus.
Putting the Law aside doesn’t mean that we’re no longer required to keep the moral law as Jesus expands the Law during the Sermon on the Mount. We keep the moral Law because we are saved, not to be saved and this is the important thing to remember. This is where spiritual maturity and the process of sanctification come in.
The Law points to Jesus as He is the fulfillment of the Law.
17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. 18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Paul points out that we are not to be conformed to the world and to take every thought captive.
2 Corinthians 10:5
5 Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;