Some Scripture-Digging Tips
Consult a commentary.
The trickiest passages can often be better understood by drinking from the well of other Bible teachers and scholars.
Know the laws.
We are no longer under them, but they still carry a huge amount of significance in the Old Testament.
The Technicalities
The most significant moral of the Ezra 10 story is that sin is messy and incredibly tricky to untangle yourself from when it also involves other people.