There were a few reasons for the Lord's manifestation.
1) to be baptized for those who couldn't be
2) to atone for our sins
3) to take away our excuse to say we can't keep the law.
Jesus says He's a fulfillment of the law.
Meaning He wouldn't fail in any area of it.
Let me ask you this, if God's law of liberty could be altered or changed
why did Jesus need to die for us. Why not say" you know what that law we setup it's too hard for them."
"Let's just make a little tweak in the Law"
God's law is ever-binding.
It is written that it would be easier for heaven and earth to pass away than for even one tittle (one jot one little marking)to be changed.
It's mind-blowing how so many people fall for Satan's deception, but the bible foretold it( Daniel 7:25)
Might I add up until the time of Constantine you would have been still observing the 7th day sabbath.
The roman church in their catechisms openly admits that there's no biblical reference for 1st day observance.
It's their mark and that they changed it as proof of their ecclesiastically power as the Mother church and
as the acting power of God on earth.
Research it, It's not very hard to find.
Thank you for this view as you are led to and in truth, appreciated, growing up in God's amazing Mercy to us all, wow!!!!!!!!!!!!!!! is what my response is:
Psalm 100:4 Enter into his gates with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name.