Mark 16:18

they shall handle serpents, and if they drink any mortal poison, it shall do them no hurt: they shall lay hands on the sick, and the sick shall recover.

Luke 10:19

I have authoriz'd you to trample upon serpents and scorpions, and triumph over all the power of the enemy; so that nothing shall be capable of doing you any mischief.

Acts 28:3-6

when Paul having taken up some brush-wood and laid it upon the fire, a viper started out from the heat, and seiz'd upon his hand.

Romans 3:13

their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips:

Romans 16:20

the God of peace will soon bruise Satan under your feet. the grace of our Lord Jesus Christ be with you. Amen.

2 Timothy 4:17

however the Lord assisted and strengthen'd me, that the gospel might be confirm'd by my remonstrance, and all the nations might hear it; so that I was deliver'd out of the mouth of the lion:

Revelation 12:9

the great dragon was cast out, that old serpent, call'd the devil or satan, which deceiveth the whole world: he was cast down to the earth, and his angels were precipitated with him.

Revelation 20:1-2

Afterwards I saw an angel come down from heaven, having the key of the bottomless pit, with a great chain in his hand.

Treasury of Scripture Knowledge

Summary

Thou shalt tread upon the lion and adder: the young lion and the dragon shalt thou trample under feet.

Bible References

Adder

Mark 16:18
they shall handle serpents, and if they drink any mortal poison, it shall do them no hurt: they shall lay hands on the sick, and the sick shall recover.
Acts 28:3
when Paul having taken up some brush-wood and laid it upon the fire, a viper started out from the heat, and seiz'd upon his hand.
Romans 3:13
their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips:
Romans 16:20
the God of peace will soon bruise Satan under your feet. the grace of our Lord Jesus Christ be with you. Amen.

The dragon

Revelation 12:9
the great dragon was cast out, that old serpent, call'd the devil or satan, which deceiveth the whole world: he was cast down to the earth, and his angels were precipitated with him.
Revelation 20:1
Afterwards I saw an angel come down from heaven, having the key of the bottomless pit, with a great chain in his hand.