Mark 11:17
And as he taught them, he said, is it not written: my house will be called a house of prayer for all nations? But you have made it a den of robbers — the two citations: Isaiah 56:7 (my house will be called a house of prayer for all nations) and Jeremiah 7:11 (has this house, which bears my name, become a den of robbers to you?). The Isaiah citation establishes what the temple was meant to be — a house of prayer for all nations, including Gentiles. The Jeremiah citation establishes the judgment the temple faces for its corruption — Jeremiah's temple speech preceded the Babylonian destruction.