<Table> <Tr> <Td> </Td> <Td> This article uncritically uses texts from within a religion or faith system without referring to secondary sources that critically analyze them . Please help improve this article by adding references to reliable secondary sources, with multiple points of view . (May 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article uncritically uses texts from within a religion or faith system without referring to secondary sources that critically analyze them . Please help improve this article by adding references to reliable secondary sources, with multiple points of view . (May 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> Altars (Hebrew: מזבח ‎, mizbeaḥ, "a place of slaughter or sacrifice") in the Hebrew Bible were typically made of earth (Exodus 20: 24) or unwrought stone (20: 25). Altars were generally erected in conspicuous places (Genesis 22: 9; Ezekiel 6: 3; 2 Kings 23: 12; 16: 4; 23: 8) The first altar recorded in the Hebrew Bible is that erected by Noah (Genesis 8: 20). Altars were erected by Abraham (Genesis 12: 7; 13: 4; 22: 9), by Isaac (Genesis 26: 25), by Jacob (33: 20; 35: 1 - 3), and by Moses (Exodus 17: 15, Adonai - nissi). </P> <P> After the theophany on biblical Mount Sinai, in the Tabernacle--and afterwards in the Temple--only two altars are mentioned: the Altar of Burnt Offering, and the Altar of Incense . </P>

When was the first altar built in the bible