Serpent: Fiery (Poisonous), Sent As a Plague Upon the Israelites
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Numbers 21:6, 7
So the LORD sent venomous snakes among the people, and many of the Israelites were bitten and died. / Then the people came to Moses and said, “We have sinned by speaking against the LORD and against you. Intercede with the LORD so He will take the snakes away from us.” So Moses interceded for the people.
Deuteronomy 8:15
He led you through the vast and terrifying wilderness with its venomous snakes and scorpions, a thirsty and waterless land. He brought you water from the rock of flint.
1 Corinthians 10:9
We should not test Christ, as some of them did, and were killed by snakes.