Mark 16:18

they will take snakes in their hands; even if they drink anything poisonous, it will not hurt them; they will lay their hands on the sick, and they will get well."

Luke 10:19

Listen! I have given you power to tread on snakes and scorpions, and to trample on all the power of the enemy, and nothing at all will ever harm you.

Treasury of Scripture Knowledge

Summary

And Moses and Aaron went in unto Pharaoh, and they did so as the LORD had commanded: and Aaron cast down his rod before Pharaoh, and before his servants, and it became a serpent.

Bible References

It became

Mark 16:18
they will take snakes in their hands; even if they drink anything poisonous, it will not hurt them; they will lay their hands on the sick, and they will get well."
Luke 10:19
Listen! I have given you power to tread on snakes and scorpions, and to trample on all the power of the enemy, and nothing at all will ever harm you.