2 Bible Verses about Calf worship

That was the time when they made the Calf and offered sacrifice to their idol, and held festivities in honor of their own handiwork!

Because, although they learned to know God, yet they did not offer him as God either praise or thanksgiving. Their speculations about him proved futile, and their undiscerning minds were darkened. Professing to be wise, they showed themselves fools; And they transformed the Glory of the immortal God into the likeness of mortal man, and of birds, and beasts, and reptiles.