Judges 3:5-6 New International Version (NIV)

⁵ The Israelites lived among the Canaanites, Hittites, Amorites, Perizzites, Hivites and Jebusites. ⁶ They took their daughters in marriage and gave their own daughters to their sons, and served their gods.

Ezra 9:1-2 New International Version (NIV)

Ezra’s Prayer About Intermarriage

9 After these things had been done, the leaders came to me and said, “The people of Israel, including the priests and the Levites, have not kept themselves separate from the neighboring peoples with their detestable practices, like those of the Canaanites, Hittites, Perizzites, Jebusites, Ammonites, Moabites, Egyptians and Amorites. ² They have taken some of their daughters as wives for themselves and their sons, and have mingled the holy race with the peoples around them. And the leaders and officials have led the way in this unfaithfulness.”