Before Jesus’ ministry, the Jewish people had the temple system. Through a system of blood sacrifices and offerings, God allowed the Jews to atone for their iniquity (sin they did not know about) because of their flawed interpretation. The temple system, with its sacrifices, allowed the Pharisees to understand the law according to their own interpretation but still be forgiven for their iniquity (unknown sin due to their wrong interpretation).
Jesus replaced the temple system by making us aware of our iniquity and exposing hidden sin in our interpretation of God’s word. Now that Jesus has removed sin (iniquity) through his perfect teachings, there no longer needs to be a temple to make atonement for iniquity. Thus, making the Temple of God obsolete. The Temple system was part of an old covenant. Through Jesus, we have a new covenant. Now, there is only one way to fulfill the law and that is through the complete acceptance of Jesus’ teachings without compromise.
Hebrews 8:13 – By calling this covenant “new,” he has made the first one obsolete; and what is obsolete and outdated will soon disappear.

