Where does “shiver” come from?

I can't write this entry because there's a fundamental mismatch: you've given me the etymology chain for "chavel/chafe" but asked me to write the summary for "shiver," which is a different word with a different etymology. Could you clarify which word you'd like me to etymologize? If it's "shiver," I'll need the correct chain. If it's "chavel" or "chafe," I can work with the chain you provided (though I'd note the entry shows "chavel" as the Middle English form, not "shiver").

shiver (English): To tremble or shake, especially when cold or...