Psalm 123:4 laments the scorn and contempt of the proud, reflecting the arrogant speech and hardened hearts of the enemies.

Psalm 119:70 uses the same 'heart like fat' metaphor for spiritual insensitivity, contrasting with delight in God's law.

Psalm 73:7-9 depicts the wicked with arrogant speech and hardened hearts — a detailed parallel to the description of enemies here.

Psalm 31:18 calls for silencing lying lips that speak insolently against the righteous, matching the proud mouths of the wicked.

Psalm 12:3 asks God to cut off flattering lips and boastful tongues, directly paralleling the arrogant speech in Psalm 17:10.

Psalm 12:4 quotes the proud saying 'our lips are our own; who is lord over us?' — the same arrogant attitude as the proud speakers.

Psalm 18:27 contrasts the proud (like those in v.10) with the humble whom God saves — a direct thematic opposite.

Acts 28:27 repeats Isaiah's indictment of a dull-hearted people, mirroring the closed hearts and proud speech of the wicked.

Matthew 13:15 quotes Isaiah 6:10 about dull hearts, illustrating the same spiritual blindness and arrogance seen in Psalm 17.

Isaiah 6:10 speaks of a dull, unresponsive heart — the same condition of closed hearts that refuse to understand and turn.

Job 15:27 depicts the wicked man covered in fat as a sign of pride and self-indulgence, echoing the hardened heart.

1 Samuel 2:3 directly warns against proud speech, echoing the same theme of arrogant mouths.

Deuteronomy 32:15 describes Jeshurun growing fat and kicking, linking prosperity-induced arrogance and rebellion against God.

Job 21:24 depicts the wicked's physical well-being (full breasts, moist marrow), directly paralleling 'enclosed in fat'.

Deuteronomy 31:20 warns that prosperity (waxing fat) leads to turning from God, echoing the fat imagery here.

Revelation 13:5 gives the beast a mouth speaking great things and blasphemies, matching the proud mouth.

Revelation 13:6 continues the beast's blasphemy, intensifying the proud speech against God.

2 Peter 2:18 describes false teachers speaking great swelling words, a NT parallel to proud speech.

Exodus 15:9 records the enemy's boastful pursuit, mirroring the arrogant speech of the wicked.

In Exodus 5:2, Pharaoh's defiant refusal to know the LORD exemplifies the proud speech described here.