Did the coming of Jesus render the Law of the old testament null and void

You are reading the bible correctly.
But you must relate what you ae saying to what this temple is all about, and how it serves the purpose of establishing that place where man and god meet.
You need relate this to Aaron meeting directly wit god, inside the tabernacle in a cube shaped Most Holy Room, one that measures 20X20X20.You must focus on the "exquisite precision" and details given for this Most Holy Place, and all the hints in regard to the same repetitious geometry in the Bible, in the Jewish Rituals, and in the Jewish Tabernacle in oder to understand this "place."In the OT tabernacle and the Temple of Solomon that place is a cube shaped room.
It appears again as a metaphysical "temple" in the New Testament, one that meaures 1500 milesX1500 milesX1500 miles: Revelation 21:16
Amplified Bible (AMP)
16 The city lies in a square, its length being the same as its width. And he measured the city with his reed12,000 stadia (about 1,500 miles); its length and width and height are the same.The thinking for 1000 years across all the whole of the Roman Wolrd was about God and Jesuswho together replaced and eliminated all the myths, paganism, and that ancient pantheon of gods and goddesses from the Christian world.The Kingdom of God was within the whole Roman World for 1000 years.