Where does “שְׂרָפִים” come from?

שְׂרָפִים (Hebrew) comes from Hebrew שָׂרָף — venomous snake; seraph.

Ancestry of “שְׂרָפִים”, step by step

Step	Language	Word	Meaning
1	Hebrew	שָׂרָף	venomous snake; seraph

שְׂרָפִים — Etymology, Origin & Word History | Etymology Explorer