Wonders — They who read what historians report of these times, will see this fulfilled in the very letter. Blood — Possibly eruption of blood, as some fountains have been reported to have run with blood, prefiguring the great effusion of blood by the sword, and wars following. Fire — Either breaking out of the earth, or lightning in the air.
Related Commentaries of Joel 2:30
Joel 2:30
30 And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.