Romans 14:4 asks 'Who are you to judge another's servant?'—mirrors the 'who are you' challenge and theme of God as master.

In Titus 2:9, the same Greek word 'antilego' (talk back) is used for slaves not talking back to masters, mirroring how humans should not talk back to God.

In Job 38:2, God rebukes Job for speaking without knowledge — mirroring Paul's admonition against questioning God's design.

In Job 40:2, God asks if a faultfinder can contend with the Almighty — directly echoing Paul's rhetorical question to his objector.

In Job 40:8, God asks if Job will condemn Him to justify himself — paralleling Paul's defense of God's sovereign right over creation.

In Job 42:2-6, Job repents of questioning God — showing the proper conclusion that Paul's logic demands: submission to God's sovereignty.

In Matthew 20:15, the landowner claims the right to do as he wishes with his own — illustrating the same divine prerogative Paul invokes with the potter.

Isaiah 29:16 is the direct OT source: 'Shall what be formed say to him who formed it...' It uses the identical pottery metaphor quoted by Paul.

Isaiah 45:9-11 uses the same clay/potter imagery: 'Does the clay say to the potter, “What are you making?”'—an OT parallel to Romans' theme.

James 4:12 declares God the only judge and asks 'who are you to judge?'—strongly echoes the sovereignty theme of Romans 9:20.

Job 1:22 states Job did not charge God with wrongdoing—a direct parallel to not talking back to God, showing righteous response.

Acts 11:17 asks 'who was I to stand in God's way?'—directly parallels the rhetorical challenge against opposing God's will in Romans 9:20.

Daniel 4:35 declares no one can question God's actions — directly parallel to Paul's 'who are you to answer back?' in Romans 9:20.

Ezekiel 18:25 directly confronts those who call God's ways unjust — mirrors the rebuke in Romans 9:20 against answering back to God.

Jeremiah 18:4 provides the original potter/clay metaphor Paul adapts — God reshapes the vessel as He pleases, affirming His sovereign right.

Isaiah 64:8 uses the same potter/clay metaphor — God as potter, we as clay — which Paul cites in Romans 9:20.

In Isaiah 10:15, the same axe/saw imagery shows the tool cannot boast over the user — directly parallel to the potter/clay.

In Ecclesiastes 8:4, the king's word is supreme — a parallel to God's sovereignty where no one can question what He does.

In Ecclesiastes 6:10, it states man cannot dispute with the stronger — directly parallel to Paul's rhetorical question.

In Job 9:32, Job laments that God is not a man he can answer — echoing the same human limitation before God's sovereignty.

In Job 33:13, Elihu questions why anyone would contend with God — reinforcing Paul's point that humans lack standing to argue with their Creator.

Malachi 3:13 records God accusing Israel of speaking harshly against Him — similar to the attitude of answering back rebuked in Romans 9:20.

In Job 36:23, Elihu asserts no one can charge God with wrongdoing — supporting Paul's argument that God's ways are beyond human judgment.

Job 9:3 says if someone wished to dispute with God, he cannot answer one time in a thousand—parallels the impossibility of contending with God.