Idolatry

Acts 7:
43. Yea, ye took up the tabernacle of Moloch, and the star of your god Remphan, figures which ye made to worship them: and I will carry you away beyond Babylon.

Amos 5:
26. But ye have borne the tabernacle of your Moloch and Chiun your images, the star of your god, which ye made to yourselves.