In Job 34:9, Elihu quotes the same sentiment — that serving God brings no profit — echoing the wicked's words from Job 21:15.

In Job 35:3, Elihu again cites this complaint about the lack of advantage in serving God, directly referencing the same question.

In Job 1:9, Satan similarly questions whether Job serves God for profit, mirroring the wicked's attitude in Job 21:15.

In Job 8:6, Bildad promises reward for righteousness, directly opposing the wicked's denial of profit in serving God.

In Job 22:17, Eliphaz quotes the wicked saying 'What can the Almighty do to us?' — nearly identical to Job 21:15.

In Job 22:2, Eliphaz discusses profit from serving God, using the same term as the wicked's question.

Exodus 5:2 has Pharaoh asking 'Who is the LORD?' — the same defiant question as in Job 21:15.

Psalm 12:4 records the arrogant saying 'who is master over us?' — echoing Job 21:15's rejection of serving God.

In Isaiah 45:19, God declares He did not say 'seek me in vain,' directly contradicting the wicked's claim that prayer is profitless.

Hosea 13:6 shows Israel forgetting God after becoming full — the same prosperity-induced forgetfulness as in Job 21:15.

Proverbs 30:9 prays against denying God with 'Who is the LORD?' — the same phrase as the wicked's question in Job.

Jeremiah 44:18 records people claiming that serving God brought lack, directly matching the 'what profit' complaint in Job.

Zephaniah 1:12 describes complacent men who say God does nothing, exactly the reasoning behind Job's wicked.

Malachi 3:14 quotes the exact complaint 'It is vain to serve God; what profit?' — a direct echo of Job 21:15.

In Matthew 25:24, the servant's complaint about a hard master mirrors the wicked's question — both see serving God as unprofitable.

In Luke 19:21, the servant calls his master 'austere' and fears him — parallel to the wicked's complaint that serving God yields no profit.

In Romans 1:28, people 'did not like to retain God in their knowledge' — directly parallel to the wicked asking 'What is the Almighty that we should serve him?'

In Psalm 73:13, Asaph laments that keeping his heart clean seems vain, echoing the profitlessness question.

In Genesis 25:32, Esau asks 'of what use is a birthright?' — a direct parallel to the wicked's question about the profit of serving God.

In Romans 3:11, 'none that seeketh after God' — the wicked's question reveals they do not seek or value God.

Jeremiah 44:16 shows direct refusal to listen to God's word, echoing the wicked's rejection of service.

Isaiah 43:22 has God accusing Israel of not calling on Him, reflecting the same neglect as Job's wicked.

Jeremiah 9:6 describes people refusing to know God through deceit, akin to the wicked's attitude in Job.

In Isaiah 30:11, the people similarly reject hearing about the Holy One, mirroring the wicked's dismissal of serving God.

In Malachi 1:13, the priests treat worship as a weariness, showing a similar contempt for serving God as in Job 21:15.

Proverbs 1:29 says they hated knowledge and did not choose fear of the Lord, paralleling the wicked's refusal to serve.

In Matthew 7:7, Jesus promises that asking brings answers, contrasting the wicked's view that prayer yields no profit.

Psalm 139:20 speaks of enemies speaking against God with malice, similar to the wicked's dismissive question in Job.

In Psalm 119:155, the wicked are described as not seeking God's statutes, mirroring the rejection of service in Job 21:15.

In John 16:24, Jesus assures that asking in His name brings joy, opposing the claim that serving God is unprofitable.

In Psalm 94:4, the wicked boast arrogantly, similar to the arrogant question in Job 21:15.

In Psalm 14:4, evildoers do not call on the LORD, matching the wicked's refusal to serve God in Job 21:15.