'Altar' in the Bible

Then flew one of the seraphims unto me, having a live coal in his hand, which he had taken with the tongs from off the altar:

In that day shall there be an altar to the LORD in the midst of the land of Egypt, and a pillar at the border thereof to the LORD.

By this therefore shall the iniquity of Jacob be purged; and this is all the fruit to take away his sin; when he maketh all the stones of the altar as chalkstones that are beaten in sunder, the groves and images shall not stand up.

But if thou say to me, We trust in the LORD our God: is it not he, whose high places and whose altars Hezekiah hath taken away, and said to Judah and to Jerusalem, Ye shall worship before this altar?

Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for mine house shall be called an house of prayer for all people.

All the flocks of Kedar shall be gathered together unto thee, the rams of Nebaioth shall minister unto thee: they shall come up with acceptance on mine altar, and I will glorify the house of my glory.