Hebrews 13:10

We have an altar, where of they have no right to eat which serve the tabernacle.

The altar is Christ as the true altar. To offer sacrifice on the wrong altar or to offer incense with the wrong fire was sinful. The altar offered to God must not be confused with a strange altar, and to turn from God to seek counsel elsewhere is a sinful misuse of what is sacred. Those who seek counsel at such strange altars receive an answer according to their works and deeds. The Holy Spirit is the true fire and source of guidance, and only the person led and guided by the Spirit is a safe counsellor.