'Hearth' in the Bible

Command Aaron and his sons, saying, This is the law of the burnt-offering: the burnt-offering shall be on the hearth upon the altar all night unto the morning; and the fire of the altar shall be kept burning thereon.

And he shall break it as a potter's vessel is broken, breaking it in pieces without sparing; so that there shall not be found among the pieces thereof a sherd wherewith to take fire from the hearth, or to dip up water out of the cistern.

And the upper altar shall be four cubits; and from the altar hearth and upward there shall be four horns.

And the altar hearth shall be twelve cubits long by twelve broad, square in the four sides thereof.