Mark 16:18

they shall take up serpents, and if they drink any deadly [poison] it shall not hurt them; and they shall lay hands on the sick, and they shall be well.

Luke 10:19

Behold, I give you power to tread on serpents and scorpions, and on all the power of the enemy; and nothing shall by any means injure you;

Acts 28:3-6

And Paul having collected a bundle of sticks and put them on the fire, a viper coming out from the heat fastened on his hand.

Romans 3:13

their throat is an opened tomb, with their tongues they practise deceit, the poison of asps is under their lips.

Romans 16:20

And the God of peace shall crush Satan under your feet shortly. The grace of our Lord Jesus Christ be with you.

2 Timothy 4:17

but the Lord stood by me, and strengthened me, that the word should be fully declared by me, and all the nations should hear, and I was delivered from the mouth of the lion.

Revelation 12:9

And the great dragon, the old serpent, who is called the devil and Satan, and who deceives all the world, was cast to the earth, and his angels were cast [to the earth] with him.

Revelation 20:1-2

And I saw an angel descending from heaven, having the key of the abyss and 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 take up serpents, and if they drink any deadly [poison] it shall not hurt them; and they shall lay hands on the sick, and they shall be well.
Acts 28:3
And Paul having collected a bundle of sticks and put them on the fire, a viper coming out from the heat fastened on his hand.
Romans 3:13
their throat is an opened tomb, with their tongues they practise deceit, the poison of asps is under their lips.
Romans 16:20
And the God of peace shall crush Satan under your feet shortly. The grace of our Lord Jesus Christ be with you.

The dragon

Revelation 12:9
And the great dragon, the old serpent, who is called the devil and Satan, and who deceives all the world, was cast to the earth, and his angels were cast [to the earth] with him.
Revelation 20:1
And I saw an angel descending from heaven, having the key of the abyss and a great chain in his hand.