Psalm 73:11 reveals the reasoning behind the arrogance in verse 9: they say God doesn't see or know.

Psalm 94:4 depicts the wicked boasting and speaking arrogantly — the same defiant speech against God as in Psalm 73:9.

Psalm 139:20 describes enemies who speak against God with malicious intent — closely matching the arrogant mouths of Psalm 73:9.

In Psalm 39:1, the psalmist vows to guard his tongue from sin — contrasting the unbridled arrogance of the wicked in Psalm 73:9.

In Revelation 13:6, the beast blasphemes God and his dwelling — the same defiant speech against heaven.

In Exodus 5:2, Pharaoh's defiance of God's authority exemplifies setting the mouth against heaven as in Psalm 73:9.

In Daniel 7:25, the little horn speaks words against the Most High — a direct parallel to setting mouths against the heavens.

In Job 21:14, the wicked tell God to depart, directly paralleling the mouth set against heaven in Psalm 73:9.

In 2 Chronicles 32:15, Sennacherib's envoy boasts against God, mirroring the wicked's speech against heaven in Psalm 73:9.

In Job 15:25, Eliphaz describes the wicked who stretch out their hand against God — the same defiance of the Almighty.

In 2 Chronicles 32:16, Sennacherib's servants speak against the LORD God — another instance of the same defiant speech.

In Isaiah 37:23, Sennacherib's blasphemy against the Holy One of Israel is a specific historical example of the arrogant speech against heaven described here.

In Ezekiel 35:13, God accuses Edom of magnifying themselves against Him with their mouth — identical to the arrogant speech against heaven in Psalm 73:9.

In 2 Kings 19:22, Isaiah identifies the Assyrian's blasphemy as raising the voice against the Holy One — directly matching the arrogance here.

In Hosea 7:16, the 'insolence of their tongue' directly parallels the tongue strutting through the earth — both describe arrogant speech against God.

In James 3:5, the tongue boasting of great things echoes the same theme of arrogant speech that 'struts through the earth' in Psalm 73:9.

In 2 Peter 2:18, false teachers speaking loud boasts of folly parallel the arrogant tongue of the wicked described in Psalm 73:9.

In 2 Kings 18:29, the Assyrian commander's taunt against Hezekiah's God is a concrete example of setting the mouth against heaven.

Isaiah 36:20 records the Rabshakeh claiming no god can deliver from Assyria — a specific blasphemous boast against God, echoing heaven-set arrogance.

Isaiah 3:8 says Judah's speech and deeds defy God — similar defiance against heaven as in Psalm 73:9, but in a national judgment context.