Fire
Fire in Scripture carries multiple theological dimensions simultaneously. As the medium of sacrifice, fire was the means by which offerings ascended to God: Noah's post-flood sacrifice (Genesis 8:20), the altar of burnt offering, and the law's requirement that the altar fire burn continually (Leviticus 6:9) all ground fire in Israel's sacrificial system. Critically, the original fire on the tabernacle altar was kindled by God himself (Leviticus 9:24; 2 Chronicles 7:1) — a divine authorization that made unauthorized "strange fire" an act of sacrilege (Leviticus 10:1-2).
Beyond the sacrificial, fire is the preeminent symbol of God's presence, holiness, and judgment. The burning bush that was not consumed (Exodus 3:2), the pillar of fire in the wilderness, the fire of Sinai (Deuteronomy 4:11-12), and Elijah's contest at Carmel all express God's active presence in fire. Hebrews 12:29 summarizes: "our God is a consuming fire." The New Testament extends fire imagery to the Holy Spirit's coming (Acts 2:3 — tongues of fire), purifying discipline (1 Corinthians 3:13-15), and eschatological judgment (Revelation 20:14).