In this article, we want to analyse the impact on changing these laws. There's a reason why God wanted the law to reach us and the outcome of following the laws will always benefit humankind, whereas ignoring it only bring disadvantages to us.
What Jesus said:
Matthew 5:17-18
(17) Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them
(18) For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished.
What Saint Paul said:
Galatians 3:13 - Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: "Cursed is everyone who is hung on a pole."
Do we follow the word of Jesus Christ or do we follow the word of a Saint? Which has the priority? If both verses have the same intention, we can follow both, however, Biblical scholars will agree that we have to prioritized Jesus words first (the ones with red text) if the intentions are different.
Let's analyse here point by point on the impact of changing the law
1. Mankind will get too comfortable
But when people are too comfortable they will feel not convenient to follow the law and they will use Jesus words and find excuses to make the law not needed anymore like eating clean food law, etc. Why human do this? So they find an easier route out from having to follow the laws. At the end of the human generations, they will not do what Jesus and other prophets do and follow their own law. But as the verse above, Jesus said clearly that we can't change the law.
2. Mankind future generations will boast and law will fade
When reading the New Testament, people will have the impression that the law is not needed anymore, therefore, they will not do what Jesus and other Prophets before him did. The future generations will say (and they will not realize they're indirectly boasted), I will not have to pray like Jesus and previous Prophets did, I can eat food that Moses and his followers can't, I will not have to cover my hair like previous people did, etc because Jesus Christ has redeemed us and you can do whatever you want.
Try to think and go back and read Matthew 5:17 and you'll realize Jesus said do not change the law.
Why women during the time of Jesus wear head covers?
Why women in Othordox Christian church wear head covers today?
Deuteronomy 14:8 - The pig is also unclean; although it has a divided hoof, it does not chew the cud. You are not to eat their meat or touch their carcasses.
Why do Jews and Muslim prevent themselves from eating pork?
Do they follow the law of the Bible? What about people that consume them today?
Exodus 20: 4 - You shall not make for yourself an image in the form of anything in heaven above or on the earth beneath or in the waters below.
Why in some churches we can find images and statues of Jesus. Does the law fade away?
Why don't a single Jew Temple or a Muslim Mosque have Images of God or anything from the heavens? Do they follow the law of the Bible?
As a conclusion, God is like a Father to humankind, God gave the law to mankind for a reason. Let's say as parents, we have kids and we told them there's a law but if you're righteous you don't have to follow the law. In the long run, the kids will get comfortable and at the end do whatever they want according to their will and won't follow anything that we'll say. The ending will always be negative to the kids.
If you try see this at a bigger picture, you might be able to see the impact of changing the laws for humankind.

