To dream of an altar represents feelings about great personal sacrifice or loyalty to a cause. A willingness to prove your faith or loyalty with a big gesture. A willingness to prove your loyalty to a large group of people with a serious sacrifice. Surrendering total respect and loyalty by whatever means necessary. Surrendering your ego to prove your faith or loyalty. The choice to consecrate a partnership or relationship.
Alternatively, dreaming about an alter may reflect your willing to make big sacrifices for God or your faith that are public or noticed by everyone you know. A willingness to prove you would put God before all else in your life.
Negatively, an alter may reflect an excessive need to prove your faith or loyalty to a cause. An excessive need to prove your faith to God. Showing off trying to prove your faith or loyalty. Alternatively, it may reflect total humiliation that you are intentionally sacrificing all your power away to someone more powerful than you. Choosing to “sell your soul” away.