Have you ever read a passage and wondered why did God put this in his precious book? Both books of Chronicles are that way. Well Ezekiel 42 was that way for me, when I first started. And then that small voice said "attention to detail". And I went aha!!! God is showing us his character again. He is a precise God. A God of calculated thoughts. Nothing is by chance. This passage shows that and his desire to guide his creation in a specific direction. This is not just for him (of course it is his desire) but to also have a more perfect relationship with us.
Organize your life with thought and precision. Pattern it after the will of God. You will live a more Godly existence and have a peace/joy that Christ intends.