'Altar' in the Bible

Then Joshua built an altar to Yahweh, the God of Israel, in Mount Ebal,

as Moses the servant of Yahweh commanded the children of Israel, as it is written in the book of the law of Moses, an altar of uncut stones, on which no man had lifted up any iron. They offered burnt offerings on it to Yahweh, and sacrificed peace offerings.

That day Joshua made them wood cutters and drawers of water for the congregation and for the altar of Yahweh, to this day, in the place which he should choose.

When they came to the region about the Jordan, that is in the land of Canaan, the children of Reuben and the children of Gad and the half-tribe of Manasseh built there an altar by the Jordan, a great altar to look at.

The children of Israel heard this, "Behold, the children of Reuben and the children of Gad and the half-tribe of Manasseh have built an altar in the forefront of the land of Canaan, in the region about the Jordan, on the side that pertains to the children of Israel."

"Thus says the whole congregation of Yahweh, 'What trespass is this that you have committed against the God of Israel, to turn away this day from following Yahweh, in that you have built you an altar, to rebel this day against Yahweh?

However, if the land of your possession is unclean, then pass over to the land of the possession of Yahweh, in which Yahweh's tabernacle dwells, and take possession among us; but don't rebel against Yahweh, nor rebel against us, in building an altar other than the altar of Yahweh our God.

that we have built us an altar to turn away from following Yahweh; or if to offer burnt offering or meal offering, or if to offer sacrifices of peace offerings, let Yahweh himself require it.

"Therefore we said, 'Let's now prepare to build ourselves an altar, not for burnt offering, nor for sacrifice;

"Therefore we said, 'It shall be, when they tell us or our generations this in time to come, that we shall say, "Behold the pattern of the altar of Yahweh, which our fathers made, not for burnt offering, nor for sacrifice; but it is a witness between us and you."'

"Far be it from us that we should rebel against Yahweh, and turn away this day from following Yahweh, to build an altar for burnt offering, for meal offering, or for sacrifice, besides the altar of Yahweh our God that is before his tabernacle!"

The children of Reuben and the children of Gad named the altar "A Witness Between Us that Yahweh is God."