I have to completely disagree with you here on several counts. The Mosaic Law was NOT abolished, God still has a covenant with the Jews and that covenant is marked, on their part, by keeping the 613 Commandments.
What you were saying contradicts to the prophesy of Jeremiah (Jer. 31: 31-32) - which says “The time is coming, declares the Lord, when I will make a new covenant with the house of Israel and with the house of Judah. It will not be like the covenant I made with their forefathers when I took them by the hand to lead them out of Egypt, because they broke my covenant, though I was a husband to them, declares the Lord.”
It is also attested to by St. Paul in (Heb. 7: 18-19) which says “The old rule, then, is set aside, because it was weak and useless. For the law of Moses could not make anything perfect. And now a better hope has been provided through which we come near to God.” and in (Heb.10:1) says “The Jewish Law is not a full and faithful model of the real things; it is only a faint outline of the good things to come…” and in (Heb.8: 13) says “By speaking of the new covenant, God has made the first one old; and anything that becomes old and worn out will soon disappear.”
Now, for us Gentiles, we can fulfill the requirements of the law through faith in Christ and acting in that faith by Loving God and Loving Neighbor.
I have not seen a single verse of the bible saying like that, can you give me one?
Remember, Paul remained a faithful Jew his whole life.
If you mean that being a Jew, St. Paul still followed the law of the old covenant; well, here is his statement in (Philippians 3: 8-9) “What is more, I consider everything a loss compared to the surpassing greatness of knowing Christ Jesus my Lord, for whose sake I have lost all things. I consider them rubbish, that I may gain Christ and be found in Him, not having a righteousness of my own that comes from the law, but that which is through faith in Christ – the righteousness that comes from God and is by faith.”