1 Corinthians 10:7-8

7Do not be worshipers of handmade gods, as some of them were; just as it is written [in Scripture], “The people sat down to eat and drink [after sacrificing to the golden calf at Horeb], and stood up to play [indulging in immoral activities].”

8We must not indulge in [nor tolerate] sexual immorality, as some of them did, and twenty-three thousand [suddenly] fell [dead] in a single day!