'Altar' in the Bible

Then Gideon built an altar there to the Lord and named it The Lord is Peace. To this day it is still in Ophrah of the Abiezrites.

Now on the same night the Lord said to him, “Take your father’s bull and a second bull seven years old, and pull down the altar of Baal which belongs to your father, and cut down the Asherah that is beside it;

and build an altar to the Lord your God on the top of this stronghold in an orderly manner, and take a second bull and offer a burnt offering with the wood of the Asherah which you shall cut down.”

When the men of the city arose early in the morning, behold, the altar of Baal was torn down, and the Asherah which was beside it was cut down, and the second bull was offered on the altar which had been built.

Then the men of the city said to Joash, “Bring out your son, that he may die, for he has torn down the altar of Baal, and indeed, he has cut down the Asherah which was beside it.”

But Joash said to all who stood against him, “Will you contend for Baal, or will you deliver him? Whoever will plead for him shall be put to death by morning. If he is a god, let him contend for himself, because someone has torn down his altar.”

Therefore on that day he named him Jerubbaal, that is to say, “Let Baal contend against him,” because he had torn down his altar.

For it came about when the flame went up from the altar toward heaven, that the angel of the Lord ascended in the flame of the altar. When Manoah and his wife saw this, they fell on their faces to the ground.

It came about the next day that the people arose early and built an altar there and offered burnt offerings and peace offerings.