Listen up recruits! Nehemiah 13 is all about keeping the Torah and its laws. For starters, don't intermarry with those heathens from the other nations. We don't want their non-Jewish ways infiltrating ours. We also need to make sure the seventh day is a day of rest, and no work is done on it. This includes all forms of buying and selling. Furthermore, make sure to collect the tithes and offerings that are due to the Levites, so they can keep up their work. Finally, get rid of Tobiah and make sure the chambers of the temple are kept holy. That's an order!