2 Corinthians 6:14-17 applies the same principle of separation from unbelievers to the church, a NT parallel to this command.

Numbers 25:1 records the exact sin warned against here — Israelite men 'whoring' with Moabite women, fulfilling the warning.

Numbers 25:2 shows the consequence: the women invite Israel to idolatrous sacrifices, directly acting out the warning.

Deuteronomy 7:3 repeats the same prohibition against intermarriage with the nations, reinforcing the command.

Deuteronomy 7:4 provides the same rationale — intermarriage will turn sons to other gods, echoing the warning.

Nehemiah 13:23 reports intermarriage with Ashdod, Ammon, and Moab women — a continued violation of this command.

1 Kings 11:2-4 shows Solomon’s foreign wives turning his heart to other gods — a direct example of this warning violated.

Ezra 9:2 recounts the same intermarriage among returned exiles, showing the persistent danger of mixing with foreign peoples.

In Hosea 1:2, God commands the prophet to marry a prostitute as a symbol of Israel's spiritual adultery, echoing the 'whoring after gods' in Exodus 34:16.

Psalm 106:39 uses the same 'whoring' imagery to describe Israel's unfaithfulness after intermarriage, directly reflecting Exodus 34:16.

Psalm 106:36 describes how Israel's intermarriage led to serving idols, fulfilling the warning in Exodus 34:16.

In Nehemiah 10:30, the post-exilic community commits to the same prohibition against intermarriage with pagans, directly echoing the warning.

In Ezra 9:12, the exiles are commanded not to intermarry with foreigners, echoing this warning to avoid idolatry and preserve holiness.

In Genesis 24:3, Abraham forbids marrying Canaanite women to keep the covenant line pure — the same concern for avoiding foreign gods appears here.

Judges 3:6 describes intermarriage with Canaanites leading to serving their gods — a direct historical example of this warning being ignored.

Judges 2:17 records Israel whoring after other gods — exactly the outcome warned against here, showing the warning's historical fulfillment.

In Genesis 28:1, Isaac commands Jacob not to marry a Canaanite woman — directly echoing the same prohibition for covenant faithfulness.

Judges 8:33 describes Israel whoring after Baals — another instance of spiritual adultery warned against here, though without explicit mention of intermarriage.

Genesis 26:34 records Esau's marriage to Hittite women bringing grief — illustrating the negative outcome warned against here.