Deuteronomy 29:26
"For they went and served other gods, and worshipped them, gods whom they knew not, and whom he had not given unto them:"
Cross References (ranked by relevance)
Judges 5:8
They chose new gods; then was war in the gates: was there a shield or spear seen among forty thousand in Israel?
Deuteronomy 28:64
And the LORD shall scatter thee among all people, from the one end of the earth even unto the other; and there thou shalt serve other gods, which neither thou nor thy fathers have known, even wood and stone.