LXX Deut 23:14

ὅτι κύριος ὁ θεός σου ἐνπεριπατεῖ ἐν τῇ παρεμβολῇ σου, ἐξελέσθαι σε καὶ παραδοῦναι τὸν ἐχθρόν σου πρὸ προσώπου σου· καὶ ἔσται ἡ σου ἁγία, καὶ οὐκ ὀφθήσεται ἐν σοὶ ἀσχημοσύνη πρόγμοτος, καὶ στρέψει ἀπὸ σοῦ.

For the LORD your God walks throughout your camp to protect you and deliver your enemies to you. Your camp must be holy, lest He see anything unclean among you and turn away from you.