I am glad you ask this question. Even though I have responded many times to it in several other similar threads.
First of all, w are to love God with all of our hear, soul and understanding,.
We are to obey Jesus Christ, and He is to be the example after Which we are to model ourselves..
He has taught us which laws may be omitted, and which laws should be engraved on the tablets of our hearts, although they used to be in stone and on parchment.
We are no longer bound by laws of the Temple; we are the living stones of the Temple which Jesus, the Chief and the Corner Stone will return to build.
The Levitical (priestly) laws, again for there is not longer a temple, and second we are priests to the Most High God, with Jesus the High Priest.
Sacrifice for sin is One, Jesus Christ, and Once, though we are told to offer the sacrifice of thanksgiving, which makes all sense because all we may offer God is Thanks. Everything is His.
Dietary laws by Jesus Christ's teaching are no longer necessary. Nothing by entering the body defiles the body, it is what may proceed from it, for the heart that defiles the body, lying, murders, adulteries, and all evil intents. Peter's vision of the sheet and the unclean animals and his being commanded to eat is another. Also Paul teaches when we are in the house of unbelievers, we may eat whatever is presented before us as long as it is received with thanks given it is blessed. He adds we should not eat blood, nor anything that ha died of itself, nor anything strangled....... I find most of what I have in my diet is considered clean, but this is just happenstance.
There are ordinances and statues which God said He gave to the Children of Israel that are bad and ought not be followed. I believe He did this to show the hardness of the hearts of so many.
The laws on morality ae good to be studied. Some of the laws are mentioned in the sermon on the mount. You have heard it said an eye for an eye, but Jesus says not turn the other cheek. It is also taught it is better to suffer for doing what is right if it is the will of God than for doing what is wrong. Love God but hate your enemy? No, Love God and pray for those who wrong you.
All of the above is taught in the New Testament by Jesus Christ....that is, if you believe all of the NT isinspired by Him, and I do.
WE obey the law naturally by the infilling of the Holy Spirit and the understanding engraved on our inward parts and hearts. This does not preclude the validity of the laws remaining. For instance, do not plant tow types of seed in the same field. What? Yes! The Sower, Jess, the seed, the Gospel, and the filed, the world or this age..
The gift of faith and the Holy Spirit causes us to obey by our new nature, but it does not mean the law is dead which remains, the curse of the law, death, was destroyed on the cross. You and I no longer have to fear the curs eof the law, and we by no means need to run away from the law for the law, as taught by Jesus Christ, is still quite valid. It is filled with God's wisdom.
When we do not do as well as the perfect One, Jesus, we are living in grace because of our faith. We confess our sins, that is our breaking any laws, and our High Priest is the Mediator between us and our Father, as is written.
If the law were not still to be observed as best we can, with no fear of death, there would be no need of our Mediator to speak always on our behalf. Meanwhile we obey, and be perfected by God in us as our way is being finishes in this age.
If the question is not to the satisfaction of all, this is not due to a lack of faith in Jesus Christ.