When Jesus cleansed the Temple, he was pointing toward himself as the true and pure Temple. We, as his people through faith and baptism, are also the Temple which needs continual cleansing because of our sinfulness. Father Jeremiah explains this and how it affects out lives day in and day out.
Image: Theodoor Rombouts, Public domain, via Wikimedia Commons. Image Location: https://commons.wikimedia.org/wiki/File:Theodoor_Rombouts_-_Christ_Driving_the_Money-changers_from_the_Temple.jpg