Here we will see that in no place does the well read passage of Matthew 5:17-18 abolish or cancel Torah Law (the law of Moses).
Instead, we will learn that the things that these verses actually speak of are as follows;
A) Christ was not sent to cancel the Law of Moses, but rather observe (fulfil) G-d’s commandments in his own walk.
B) when it says ‘…not a dot, will pass from the Law until all is accomplished.’ (ESV), this means no laws are cancelled as per the previous verse – however the ‘new covenant’ was put in place at his death and resurrection – and this means believers are under the new covenant, not the old.
You are most welcome to read on for more detailed information with references.