Proverbs 25:4 uses the same refining silver imagery—removing dross produces a vessel, echoing the testing of hearts by the Lord.

Jeremiah 17:10 directly states that God searches the heart and mind, reinforcing the source of testing.

Revelation 2:23 declares Christ searches hearts and minds, echoing God's testing of the heart.

1 Peter 1:7 uses the gold refined by fire metaphor for faith, showing NT appropriation of the testing theme.

Malachi 3:3 expands the refining image: God purifies the Levites like silver and gold.

Malachi 3:2 portrays God's coming as a refiner's fire, applying the refining metaphor to judgment.

Zechariah 13:9 prophesies future refining of God's people like silver and gold, linking testing to purification.

Isaiah 48:10 applies the refining imagery to Israel's exile, where God tests them in affliction like silver.

Psalm 66:10 uses the same silver refining metaphor to describe how God tested Israel through hardship.

Psalm 26:2 turns the general principle into a personal plea as David asks God to test his heart and mind.

Psalm 139:23 directly asks God to test and know the heart, perfectly aligning with Proverbs 17:3's theme.

Genesis 22:1 shows God testing Abraham's heart — a narrative example of the principle in Proverbs 17:3 that the Lord tests hearts.

Job 23:10 uses the refining gold metaphor for God's testing, exactly matching the crucible/furnace imagery of Proverbs 17:3.

2 Chronicles 32:31 explicitly says God tested Hezekiah to know his heart, a direct parallel to Proverbs 17:3.

Romans 8:27 states God 'searches the hearts'—directly parallel to the Lord testing hearts, emphasizing His intimate knowledge.

1 Thessalonians 2:4 explicitly says God 'tests our hearts'—a direct parallel to the same concept in the proverb.

1 Chronicles 28:9 says the LORD searches every heart, closely matching the idea of God testing the heart in Proverbs 17:3.

Deuteronomy 8:2 explicitly states God tested Israel to know what was in their heart, directly echoing Proverbs 17:3.

Jeremiah 6:29 applies the refining metaphor to a failed purification—the wicked are not separated, a sobering echo of God testing hearts.

Ezekiel 22:18 calls Israel 'dross of silver'—a direct parallel to the refining image, showing the people as impure metal.

Hebrews 11:17 recounts Abraham being tested—a concrete example of the heart-testing principle from the proverb.

Daniel 11:35 speaks of the wise being refined and made white through trials, mirroring the testing of hearts in the proverb.

James 1:12 promises blessing for those who endure testing, echoing the refining idea and approval that comes from it.