From the burning bush to Pentecost, from Elijah's fire to the purifying fire of 1 Corinthians 3: the Bible constantly speaks of fire.
Fire of Presence: The Burning Bush
Exodus 3—the fire that burns without consuming is a sign of holy presence. A gentle, intense fire, without destruction = a divine call.
Fire of Anointing: Pentecost
Acts 2—tongues of fire on each one. Dreaming of small flames on yourself or others: a fresh outpouring of the Holy Spirit.
Purifying Fire
1 Corinthians 3:13—"the fire will test what sort of work each one has done." Fire in a dream that burns a specific object: God is removing what is straw.
Fire of Judgment or Attack
Destructive fire, painful burning: a warning, intercession, sometimes an attack. Test by peace.