Psalm 58:4

Their venom [is] like snake venom; [They are] like a deaf viper that closes its ear

Psalm 140:3

They sharpen their tongue as [sharp as] a snake's; [the] venom of a viper [is] under their lips. Selah

Ecclesiastes 10:11

If the snake bites before the charming, {the snake charmer will not succeed}.

Deuteronomy 32:33

Their wine [is] the poison of snakes, and [the] deadly poison of horned vipers.

Job 20:14

in his bowels his food is turned, [the] venom of horned vipers [is] {within him}.

Job 20:16

He will suck [the] poison of horned vipers; [the] viper's tongue will kill him.

Isaiah 11:8

And {an infant} shall play over a serpent's hole, and {a toddler} shall put his hand on a viper's hole.

Jeremiah 8:17

For look, I [am] letting loose among you snakes, adders for which there is no incantation, and they will bite you," {declares} Yahweh.

Matthew 3:7

But [when he] saw many of the Pharisees and Sadducees coming to his baptism, he said to them, "Offspring of vipers! Who warned you to flee from the coming wrath?

Matthew 23:33

Serpents! Offspring of vipers! How will you escape from the condemnation to hell?

Romans 3:13

Their throat [is] an opened grave; they deceive with their tongues; the venom of asps [is] under their lips,

James 3:8

but no human being is able to tame the tongue. [It is] a restless evil, full of deadly poison.

Treasury of Scripture Knowledge

Summary

Their poison is like the poison of a serpent: they are like the deaf adder that stoppeth her ear;

The deaf

Bible References

Poison

Psalm 140:3
They sharpen their tongue as [sharp as] a snake's; [the] venom of a viper [is] under their lips. Selah
Ecclesiastes 10:11
If the snake bites before the charming, {the snake charmer will not succeed}.
Romans 3:13
Their throat [is] an opened grave; they deceive with their tongues; the venom of asps [is] under their lips,
James 3:8
but no human being is able to tame the tongue. [It is] a restless evil, full of deadly poison.

The deaf

Jeremiah 8:17
For look, I [am] letting loose among you snakes, adders for which there is no incantation, and they will bite you," {declares} Yahweh.