Mark 16:18

they will pick up snakes [i.e., without being harmed]; and if they happen to drink anything poisonous, it will not harm them; they will place hands on sick people [i.e., with prayer] and they will be healed."

Luke 10:19

See, I have given you authority to trample on snakes and scorpions [i.e., to receive protection from accidental contact with venomous creatures. See Acts 28:5] and [to have authority] over all the power of the enemy [i.e., Satan. See verse 18]. And nothing at all will hurt you.

Acts 28:3-6

But as Paul gathered a bundle of sticks, and was placing them on the fire, a snake crawled out because of the heat and clung to his hand.

Romans 3:13

[Psa. 5:9 says], "Their throats are like open graves [i.e., they are foul-mouthed]. They have spoken deceitfully." [Psa. 90:3 says], "There is snake venom under their lips [i.e., their words are deadly]."

Romans 16:20

And the God, who brings peace, will soon crush Satan under your feet [i.e., bring an end to the divisive work of the false teachers there]. May the unearned favor of our Lord Jesus Christ be with you.

2 Timothy 4:17

But the Lord stood by me and strengthened me, so that through me the message could be fully proclaimed and that all the Gentiles could hear it. And I was rescued from the lion's mouth. [Note: This is probably a figure of speech indicating that Paul had escaped some immediate danger. See Psa. 22:20-21].

Revelation 12:9

Then the great dragon was thrown out [of heaven]; he is the snake from ancient times who is [also] called "the Devil," and "Satan," the deceiver of the entire world. He was thrown down to earth along with his angels.

Revelation 20:1-2

Then I saw an angel coming down from heaven, holding the key to the pit and a huge 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 will pick up snakes [i.e., without being harmed]; and if they happen to drink anything poisonous, it will not harm them; they will place hands on sick people [i.e., with prayer] and they will be healed."
Acts 28:3
But as Paul gathered a bundle of sticks, and was placing them on the fire, a snake crawled out because of the heat and clung to his hand.
Romans 3:13
[Psa. 5:9 says], "Their throats are like open graves [i.e., they are foul-mouthed]. They have spoken deceitfully." [Psa. 90:3 says], "There is snake venom under their lips [i.e., their words are deadly]."
Romans 16:20
And the God, who brings peace, will soon crush Satan under your feet [i.e., bring an end to the divisive work of the false teachers there]. May the unearned favor of our Lord Jesus Christ be with you.

The dragon

Revelation 12:9
Then the great dragon was thrown out [of heaven]; he is the snake from ancient times who is [also] called "the Devil," and "Satan," the deceiver of the entire world. He was thrown down to earth along with his angels.
Revelation 20:1
Then I saw an angel coming down from heaven, holding the key to the pit and a huge chain in his hand.