This chapter seems to have quite a few miscellaneous justice and balance regulations. I was going to say that they are oppression and mistreatment laws, but then i realized that they are not rules to tell people not to do something so much as they are regulations to help you live in justice and balance. Here are some examples. Do not pervert justice. Don’t take bribes. Take care of your enemy’s beasts even if your enemy isn’t willing to take care of them himself. Work six days and make sure you rest on the seventh. Plant for 6 years but let your fields go fallow for the seventh.
Then YHWH goes into our responsibility to honor and celebrate Him. Three times per year the people are to get together and celebrate feasts to God. Offer sacrifices with unleavened bread, not leavened, and bring your first fruits into the house of the LORD. It’s all about recognizing and honoring Him above all.
Finally, YHWH talks about what He will do. He will send an angel to guide and direct them. He will bring terror of them on their enemies. He will bless the land and the people. He will drive their enemies out ahead of them… not all at once, so that the land is not overrun by wild beasts. But the people MUST make sure that they do not pursue the false gods of the people of the land.
Overall, i don’t see an overarching theme that describes / covers the entire chapter, but these concepts need to be understood and applied to fully honor God.