Yahshua Messiah quoted that Law to a group. Notice to whom Yahshua was speaking and how long that religious system had been in operation.
MATTITHYAH 23:35 So that upon you will come all the Righteous blood shed upon the whole earth, from the blood of Righteous Abel to the blood of Zecharyah, the son of Berechyah, whom you murdered between the porch and the altar.
Did you see that? That religious system, to whom Yahshua Messiah was speaking, dates back to Cain, who killed Abel. So, to whom was Yahshua speaking?
You need to know; this is life-saving information.