A number of years back I decided to go through Hebrews and write a sonnet for each segment of the book. I thought it would be a good way to process what I was reading. I really enjoyed it. "Hebrews 4" is one of my favorites because I got to use my chemistry material at the time. There are many mysteries of God that are difficult/impossible to explain. One is that God is a God at rest, yet God is also a God who is at work.The concept I used to embody this mystery is that God is like an "allotrope." Now I am sure if you broke this down it would lead to some sort of accusation of trinitarian modalism or something, though I'm not using it here to explain the trinity. I'm just saying that like a diamond and charcoal are both carbon - just rearranged a little differently, so it is with a God at rest who is at work. He is both. There is more content in this short sonnet, but that's my favorite part.