Psalm 50:4 sets the scene of God summoning heaven and earth to judge His people, providing the immediate context for verse 6's declaration.

Psalm 75:7 states 'God is the judge' — a near-identical declaration to 'God is himself judge' here.

Psalm 97:6 uses the identical phrase 'the heavens declare his righteousness' — a direct parallel to this declaration.

Psalm 9:8 explicitly says God judges the world in righteousness, a direct parallel to the heavens proclaiming His righteousness as judge.

In Psalm 51:4, David acknowledges God's righteousness in judging sin — directly echoing the heavens' proclamation of God's righteous judgment.

In Psalm 94:2, the psalmist appeals to God as 'Judge of the earth' — directly matching the statement that God himself is judge.

Revelation 20:12 shows the dead standing before God's throne for judgment, expanding on the judgment scene introduced in Psalm 50:6.

Revelation 20:11 depicts the great white throne judgment, where God sits as judge, directly paralleling the heavens proclaiming His righteousness.

2 Corinthians 5:10 states we must all appear before Christ's judgment seat, reinforcing the theme of divine judgment from Psalm 50:6.

In Romans 14:9-12, Paul affirms that all will stand before God's judgment seat, echoing the heavens declaring His righteousness as judge.

Genesis 18:25 asks 'Shall not the Judge of all the earth do right?' — affirming God as righteous judge, as here.

In Romans 3:6, Paul argues that God must be just to judge the world — echoing the heavens' proclamation of righteous judgment.

Hebrews 12:23 explicitly calls God 'the judge of all,' directly echoing Psalm 50:6's statement that God himself is judge.

In Romans 2:16, Paul speaks of God judging secrets through Christ — directly connecting to God as judge.

In Isaiah 33:22, the LORD is declared as 'our judge' — directly matching the declaration that God himself is judge.

In 1 Corinthians 4:4, Paul echoes that only the Lord's judgment matters, reinforcing the theme that God alone is the ultimate judge.

John 5:22 reveals that the Father has committed all judgment to the Son — expanding on God's role as judge here.

2 Timothy 4:1 charges that Christ Jesus will judge the living and the dead, fulfilling the role of God as judge in Psalm 50:6.

Revelation 16:5-7 proclaims God's judgments are true and righteous — echoing the righteous judge theme of this verse.

Revelation 19:2 affirms 'true and righteous are his judgments' — a direct echo of God's righteous judgment here.

Revelation 19:11 depicts Christ judging in righteousness, reflecting the righteous judgment of God proclaimed in Psalm 50:6.

In Judges 11:27, Jephthah calls on the Lord as Judge to decide between nations, a historical instance of God's role as judge from Psalm 50:6.

Romans 2:5 speaks of the revelation of God's righteous judgment — connecting to God as judge declared here.

1 Corinthians 5:13 affirms that God judges those outside, aligning with Psalm 50:6's declaration that God is judge.

2 Thessalonians 1:5 speaks of God's righteous judgment, directly connecting to the righteousness and judgment declared in Psalm 50:6.

In Ezekiel 18:25, God defends his justice against human complaint — reinforcing that his judgment is righteous.