In Romans 16:27, Paul calls God 'only wise,' directly echoing the unsearchable wisdom implied by the question 'who has known the mind of the Lord?'

Job 15:8 asks if Job hears God's secret counsel — the same rhetorical challenge about knowing God's mind as here.

1 Corinthians 2:16 quotes the same OT verse (Isaiah 40:13) and then adds 'we have the mind of Christ' — a parallel usage.

Job 36:22 declares no teacher is like God — reinforcing that no one can be His counselor, as asked here.

Jeremiah 23:18 asks who has stood in God's council — the same theme of accessing divine counsel questioned here.

Isaiah 40:13 is the direct OT source Paul quotes: 'Who has directed the Spirit of the LORD?' — the exact question here.

In Ephesians 1:11, God works all things according to the counsel of His will, showing He needs no counselor — the very point of Romans 11:34's question.

Deuteronomy 29:29 distinguishes secret things belonging to God — aligning with the hidden wisdom and unsearchable judgments here.

In 1 Corinthians 2:11, Paul similarly asks who knows a person's thoughts, concluding that no one comprehends God's thoughts except His Spirit.

Micah 4:12 explicitly says people do not know the thoughts of the LORD, directly paralleling Romans 11:34's question.

Isaiah 40:28 directly states that no one can fathom God's understanding, mirroring Paul's rhetorical question.

Job 40:2 challenges anyone who contends with God — directly paralleling the idea that no one can be God's counselor.

Job 36:23 asks who can prescribe God's way or accuse Him — a direct parallel to the question of knowing God's counsel.

Job 34:13 asks who gave God charge over the earth — a similar rhetorical question about God's sovereignty.

Job 21:22 asks who can teach God knowledge — directly paralleling the rhetorical question about being God's counselor.

Isaiah 19:12 similarly asks where wise men are who can reveal God's plans, highlighting human ignorance of divine counsel.

Job 33:13 questions why people contend with God — a parallel theme of questioning divine justice, though less direct.

In 1 Corinthians 13:9, Paul says we know in part, reinforcing the limitation on human understanding of God's mind that Romans 11:34 highlights.

Proverbs 25:2 echoes that God conceals matters, reinforcing the idea that His mind is unknowable.