Isaiah 8:19 condemns consulting mediums, directly paralleling the soothsayer practice in Isaiah 2:6.

Isaiah 47:12 mocks Babylon's sorceries, mirroring the critique of soothsayers in Isaiah 2:6, though applied to a different nation.

Psalm 106:35 describes Israel mingling with nations and learning their ways—the exact behavior Isaiah points to as filling the land with foreign customs.

Romans 11:20 explains branches broken off due to unbelief, paralleling the cause of rejection in Isaiah 2:6.

Romans 11:2 reinforces the denial of rejection, further contrasting with Isaiah 2:6's claim.

Romans 11:1 directly contradicts Isaiah 2:6 by affirming God has not rejected his people.

Jeremiah 10:2 warns against learning pagan practices like astrology—the same soothsaying and eastern customs Isaiah lists as reasons for rejection.

Exodus 22:18 is the law forbidding sorceresses — the very practice Isaiah condemns Israel for adopting.

Nehemiah 13:23 shows post-exile Jews still marrying foreign women, continuing the same sin of embracing foreign ways that Isaiah condemns.

2 Chronicles 24:20 echoes the cause-and-effect: forsaking the Lord results in him forsaking you, as in Isaiah 2:6.

In 2 Chronicles 15:2, the principle that forsaking God leads to being forsaken directly explains the rejection in Isaiah 2:6.

1 Chronicles 10:13 records Saul's death for consulting a medium — a historical example of the judgment Isaiah warns about.

1 Kings 11:2 records the prohibition against intermarriage with foreigners—the very practice that filled Israel with foreign customs, as condemned here.

Deuteronomy 31:16 warns of Israel forsaking God for foreign gods, exactly the sin described in Isaiah 2:6.

Deuteronomy 18:10-14 lists all forbidden occult practices — providing the full background for Isaiah's indictment.

Leviticus 20:6 prescribes the penalty for turning to mediums — showing the severity of the sin Isaiah names.

Leviticus 19:31 forbids consulting mediums — directly echoing the 'soothsayers' Isaiah condemns.

Nehemiah 9:2 shows Israel separating from foreigners in repentance—the opposite of the intermingling with foreigners that Isaiah condemns here.

Jeremiah 2:25 portrays Israel chasing after foreign gods, saying 'I have loved foreigners'—the same spiritual adultery Isaiah rebukes.

Jeremiah 12:7 declares God forsaking his heritage because of sin—the same rejection of Israel that Isaiah 2:6 introduces.

Micah 5:12 prophesies God cutting off sorceries and fortune-tellers—the same divination practices Isaiah lists as filling the land.

Lamentations 5:20 laments prolonged forsaking, reflecting the exile that fulfills Isaiah 2:6's rejection.