In Psalm 50:8, God says he does not rebuke for sacrifices but implies they are not his delight — same theme as God not delighting in sacrifice.

In Psalm 51:16, David says God will not delight in sacrifice — almost identical wording to Psalm 40:6, reinforcing the same truth.

Hebrews 10:5-12 directly quotes Psalm 40:6-8, applying it to Christ's once-for-all sacrifice.

In 1 Samuel 15:22, Samuel declares that obedience is better than sacrifice — directly paralleling the psalmist's 'open ear' over offerings.

Matthew 12:7 again quotes Hosea 6:6, reinforcing that God values mercy over sacrifice, as in Psalm 40:6.

In Isaiah 1:11, God says he has no delight in the multitude of sacrifices — echoing the psalmist's statement that God does not delight in offerings.

In Matthew 9:13, Jesus quotes Hosea 6:6, applying the same principle of mercy over sacrifice to his ministry.

Hosea 6:6 echoes the same theme: God desires steadfast love and knowledge of God over ritual sacrifice.

In Jeremiah 7:21-23, God reminds that he commanded obedience, not sacrifices — directly supporting the psalmist's priority of listening over offerings.

Isaiah 50:5 explicitly says 'the Lord GOD has opened my ear, and I was not rebellious,' directly echoing Psalm 40:6.

Isaiah 48:8 describes Israel's unopened ear, contrasting with the open ear God gives in Psalm 40:6.

Hebrews 9:9 explains that OT sacrifices cannot perfect the conscience, reinforcing the psalm's point that God does not delight in them.

Jeremiah 7:22 adds that God did not originally command sacrifices, reinforcing Psalm 40:6's emphasis on obedience over ritual.

Jeremiah 6:20 directly parallels Psalm 40:6: God rejects burnt offerings and sacrifices as not pleasing.

Isaiah 1:12 rebukes empty worship—strongly parallels Psalm 40:6's rejection of mere ritual sacrifice in favor of heart obedience.

Numbers 29:17 prescribes burnt offerings for the Feast of Tabernacles—again contrasting with the psalm's emphasis on obedience over sacrifice.

Numbers 28:11 commands monthly burnt offerings—directly contrasting with Psalm 40:6's statement that God does not desire such offerings.

Exodus 21:6 describes the willing slave whose ear is pierced, prefiguring the 'open ear' of the obedient servant in Psalm 40:6.

Isaiah 50:4 speaks of the servant's ear being awakened to hear God, paralleling the 'open ear' of Psalm 40:6.

Isaiah 40:16 shows the insufficiency of even the grandest sacrifices, echoing Psalm 40:6's point that God does not delight in offerings.

Job 36:10 says God opens ears to instruction—a parallel theme of divine opening of ears for obedience, though in a different context.