Psalm 52:2 compares the tongue to a sharp razor plotting destruction, reinforcing the sharpened-tongue metaphor of Psalm 140:3.

Psalm 57:4 depicts tongues as sharp swords among fiery beasts—a direct parallel to the serpent-sharpened tongue in Psalm 140:3.

Psalm 58:4 uses nearly identical language: 'poison like a serpent' and 'deaf adder' — a close parallel to the adder's poison here.

Psalm 59:7 says lips are swords belching out words—another vivid weapon metaphor for the poison-lips in Psalm 140:3.

Psalm 64:3 explicitly says tongues are whet like swords used to aim bitter arrows—mirroring the sharpening of tongues like a serpent in Psalm 140:3.

Psalm 109:2 speaks of wicked mouths and lying tongues — a direct parallel to the venomous speech of enemies here.

Psalm 52:3 links love of evil and lying to the root of poisonous speech—the moral corruption behind the serpent-tongue in Psalm 140:3.

Psalm 31:20 speaks of being hidden from 'accusing tongues' — a similar theme of protection from harmful speech.

Psalm 36:3 describes wicked and deceitful words from the mouth — a parallel to the poisonous speech condemned here.

Psalm 94:4 mentions arrogant words of evildoers — a parallel to the harmful speech described here, though without the serpent imagery.

James 3:6-8 directly echoes the poison-of-the-tongue image, calling it an unruly evil full of deadly poison.

Romans 3:13 directly quotes 'poison of asps is under their lips' — it is a citation of this verse to illustrate universal sin.

Isaiah 59:3-5 expands the serpent imagery—adders' eggs, viper, lying lips—directly connecting to the poison under the lips in Psalm 140:3.

James 3:8 describes the tongue as 'full of deadly poison' — a clear New Testament echo of the venomous speech imagery here.

Deuteronomy 32:33 uses the same 'venom of vipers' imagery for enemies' wine, mirroring this description of malicious speech.

Matthew 12:34 calls evil speakers a 'generation of vipers', linking evil hearts to evil speech — similar to the serpent-like tongues here.

Proverbs 12:18 compares rash words to sword thrusts, echoing the sharp-tongue imagery of Psalm 140:3 but contrasting with healing speech.

Genesis 3:13 traces the serpent's deception that began sin — the same serpent source behind the sharpened tongues here.

Proverbs 25:18 compares false testimony to weapons — a parallel to the poisonous speech here, both depicting words as destructive.

Jeremiah 9:3 uses the same bow-tongue image for lying, reinforcing the theme of deceitful speech as a weapon.

Romans 3:14 continues the catena on sinful speech with 'mouth full of cursing' — expands the same theme as the poisonous lips here.

2 Corinthians 11:3 warns of the serpent's deception corrupting minds — same serpent imagery used for deceit.

Lamentations 3:62 mentions lips of assailants whispering — similar focus on enemies' speech, though without the snake metaphor.