Altars were places of sacrifice and worship constructed of
various materials. They could be either temporary or permanent. Some
altars were in the open air; others were set apart in a holy place.
They could symbolize either God’s presense and protection or
false worship that would lead to God’s judgment.
Old
Testament
Noah
and the patriarchs. The
first reference in the Bible is to an altar built by Noah after the
flood (Gen. 8:20). This action suggests the sanctuary character of
the mountain on which the ark landed, so that theologically the ark’s
resting place was a (partial) return to Eden. The purpose of the
extra clean animals loaded onto the ark was revealed (cf. 7:2–3).
They were offered up as “burnt offerings,” symbolizing
self-dedication to God at this point of new beginning for the human
race.
Abram
built altars “to the Lord” at places where God appeared
and spoke to him (Gen. 12:7) and where he encamped (12:8; 13:3–4,
18). No sacrifice is explicitly mentioned in association with these
altars. Thus, they may have had the character of monuments or
memorials of significant events. In association with Abram’s
altars, he is said to have “called on the name of the Lord”
(12:8)—that is, to pray. The elaborate cultic procedures
associated with later Israelite altars (e.g., the mediation of
priests) were absent in the patriarchal period. Succeeding
generations followed the same practices: Isaac (26:25) and Jacob
(33:20; 34:1, 3, 7). God’s test of Abraham involved the demand
that he sacrifice his son Isaac as a burnt offering. In obedience,
Abraham built an altar for this purpose, but through God’s
intervention a reprieve was granted, and a ram was substituted (22:9,
13). Moses erected an altar after the defeat of Amalek at Rephidim,
to commemorate this God-given victory (Exod. 17:15–16).
Moses
and the tabernacle.
In the context of making the covenant with Israel at Sinai, God gave
Moses instructions on how to construct an altar (Exod. 20:24–26;
cf. Josh. 8:31). It could be “an altar of earth” (of
sun-dried mud-brick construction?) or else made of loose natural
stones. The Israelites were expressly forbidden to use hewn stones,
perhaps for fear of an idolatrous image being carved (making this
prohibition an application of Exod. 20:4; cf. Deut. 27:5–6).
Even if the altar was large, it was not to be supplied with steps for
the priest to ascend, lest his nakedness be shown to God. The
requirement that priests wear undergarments reflects the same concern
(Exod. 28:42–43). An altar made of twelve stones, the number
representing the number of the tribes of Israel, was built by Moses
for the covenant-making ceremony (Exod. 24:4), in which half the
blood of the sacrifice was sprinkled on the altar (representing God?)
and the other half on the people, the action symbolizing the covenant
bond created (24:6–8).
For
the tabernacle, a portable “altar of burnt offering” was
made (Exod. 27:1–8; 38:1–7). It had wooden frames
sheathed in bronze and featured a horn at each corner. There was a
ledge around the altar halfway up its sides, from which was hung
bronze grating, and it had four bronze rings into which poles were
slipped for transport. As part of the cultic ritual, blood was
smeared on the horns (29:12). This altar stood in the open air in the
courtyard of the tabernacle, near the entrance to the tabernacle.
Included among the tabernacle furnishings was a smaller “altar
of incense,” with molding around the top rim (30:1–10;
37:25–28). This altar was, however, overlaid with gold, for it
stood closer to God’s ritual presence, inside the tabernacle,
“in front of the curtain that shields the Ark of the Covenant
law,” the curtain that separated the most holy place from the
holy place. The high priest placed fragrant incense on this altar
every morning and evening. The fact that this was a daily procedure
and the description of the positioning of the tabernacle furnishings
in Exod. 40:26–28 (mentioning the altar of incense after
speaking about the lampstand) might be taken as implying that the
incense altar was in the holy place, but 1 Kings 6:22 and Heb.
9:4 suggest that it was actually in the most holy place, near the
ark.
God,
through Moses, instructed the people that on entering the Promised
Land they were to destroy all Canaanite altars along with the other
paraphernalia of their pagan worship (Deut. 7:5; 12:3). Bronze Age
altars discovered at Megiddo include horned limestone incense altars
and a large circular altar mounted by a flight of steps. In Josh. 22
the crisis caused by the building of “an imposing altar”
by the Transjordanian tribes was averted when these tribes explained
to the rest of the Israelites that it was intended as a replica of
the altar outside the tabernacle and not for the offering of
sacrifices. The worship of all Israel at the one sanctuary both
expressed and protected the religious unity and purity of the nation
at this vital early stage of occupation of the land. In later
narratives, however, Gideon (Judg. 6), Samuel (1 Sam. 7:17),
Saul (1 Sam. 14:35), and David (2 Sam. 24) are said to
build altars for sacrifice and to have done so with impunity, and in
fact with the apparent approval of the biblical author. The
established custom of seeking sanctuary from threat of death in the
nation’s shrine is reflected in 1 Kings 1:50–53;
2:28–35, where Adonijah and Joab are described as “clinging
to the horns of the altar.”
Solomon’s
temple and rival worship centers.
In the temple built by Solomon, the altar of incense that belonged to
the “inner sanctuary” was overlaid with gold (1 Kings
6:20, 22). Solomon’s prayer at the dedication of the temple was
made before the bronze altar in the courtyard (1 Kings 8:22,
54). The altar for sacrifices was much larger than the one that had
been in the tabernacle (1 Chron. 4:1 gives its dimensions).
Although
many of the psalms may originally have been used in worship in the
first temple, there are surprisingly few references to the altar in
the Psalter (only Pss. 26:6; 43:4; 51:19; 84:3; 118:27). They express
the psalmist’s devotion to God and the temple as the place
where God’s presence is enjoyed as the highest blessing.
After
the division of the kingdom, Jeroboam offered sacrifices at the rival
altar that he set up in Bethel (1 Kings 12:32–33). An
unnamed “man of God” (= prophet) predicted Josiah’s
desecration of this altar, which lay many years in the future
(1 Kings 13:1–5). Amos and Hosea, who prophesied in the
northern kingdom of the eighth century BC, condemned this and the
other altars in that kingdom (e.g., Amos 3:14; Hos. 8:11–13).
Ahab set up an altar to Baal in Samaria (1 Kings 16:32), and the
suppression of Yahwism by Jezebel included the throwing down of the
Lord’s altars in Israel (19:10, 14). The competition on Mount
Carmel between Elijah and the prophets of Baal involved rival altars
(1 Kings 18), and Elijah’s twelve-stone altar recalls that
of Exod. 24, for he was calling the nation back to the exclusive
monotheism preached by Moses (1 Kings 18:30–32).
With
regard to the southern kingdom, the spiritual declension in the time
of Ahaz manifested itself in this king making an altar modeled on the
Assyrian prototype that he had seen on a visit to Damascus (2 Kings
16:10–14). He shifted the Lord’s altar from in front of
the temple, where it had previously stood. Godly Hezekiah’s
religious reform included the removal of the altars at the high
places that up to that time had been centers of deviant worship
(2 Kings 18:4, 22). The apostasy of King Manasseh showed itself
in his rebuilding the high places that Hezekiah his father had
destroyed and in erecting altars to Baal (2 Kings 21), thus
repeating the sin of Ahab (cf. 1 Kings 16:32). Josiah’s
reform included the destruction of all altars outside Jerusalem
(2 Kings 23) and the centralizing of worship in the Jerusalem
temple.
In
Ezekiel’s vision of the new temple of the future, the
sacrificial altar is its centerpiece (Ezek. 43:13–17). The
altar was to be a large structure, with three-stepped stages and a
horn on each corner, and it was to be fitted with steps on its
eastern side for the use of the priests.
The
second temple.
The Israelites’ return from Babylonian exile was with the
express aim of rebuilding the temple. The first thing that the
priests did was to build “the altar on its foundation”
(i.e., its original base; Ezra 3:2–3). The returnees placed the
altar on the precise spot that it had occupied before the Babylonians
destroyed it along with the temple. They took such care because they
wanted to ensure that God would accept their sacrifices and so grant
them protection. At the very end of the OT period, the prophet
Malachi condemned the insincerity of Israel’s worship that was
manifested in substandard sacrifices being offered on God’s
altar (Mal. 1:7, 10; 2:13).
New
Testament
In
the NT, the altar is mentioned in a number of Jesus’ sayings
(e.g., Matt. 5:23–24; 23:18–20). In the theology of the
book of Hebrews, which teaches about the priesthood of Jesus Christ
(in the order of Melchizedek), the role of the priest is defined as
one who “serve[s] at the altar” (7:13), and Christ’s
altar (and that of Christ’s followers) is the cross on which he
offered himself as a sacrifice for sin (13:10). Another argument of
Hebrews is that since on the most important day in the Jewish ritual
calendar (the Day of Atonement), the flesh of the sacrifice was not
eaten (see Lev. 16:27), the eating of Jewish ceremonial foods is not
required, nor is it of any spiritual value. The altar in the heavenly
sanctuary is mentioned a number of times in the book of Revelation
(6:9; 8:3, 5; 9:13; 11:1; 14:18; 16:7). It is most likely the altar
of incense and is related to the prayers of God’s persecuted
people, which are answered by the judgments of God upon the people of
the earth.