Psalm 106:28
"They joined themselves also unto Baalpeor, and ate the sacrifices of the dead."
Cross References (ranked by relevance)
And Moses said unto the judges of Israel, Slay ye every one his men that were joined unto Baalpeor.
I found Israel like grapes in the wilderness; I saw your fathers as the firstripe in the fig tree at her first time: but they went to Baalpeor, and separated themselves unto that shame; and their abominations were according as they loved.
Your eyes have seen what the LORD did because of Baalpeor: for all the men that followed Baalpeor, the LORD thy God hath destroyed them from among you.
But I have a few things against thee, because thou hast there them that hold the doctrine of Balaam, who taught Balac to cast a stumblingblock before the children of Israel, to eat things sacrificed unto idols, and to commit fornication.
They sacrificed unto devils, not to God; to gods whom they knew not, to new gods that came newly up, whom your fathers feared not.
Is the iniquity of Peor too little for us, from which we are not cleansed until this day, although there was a plague in the congregation of the LORD,
Behold, these caused the children of Israel, through the counsel of Balaam, to commit trespass against the LORD in the matter of Peor, and there was a plague among the congregation of the LORD.