Joel 2:30

And I will show wonders; as he promiseth such grace to believers, so he warneth them that they should not be surprised with those alarming prodigies which in those days God would show, which would usher in the hard times that should be chastisement to the best, and destruction to the worst: whoso will read and observe what historians and naturalists report of those times will see this fulfilled in the very letter, and Matthew 24:7,29 Mr 13:24 Luke 21:11,25. In the heavens and in the earth; above men, and under their feet; all which signs are particularly named, and first the signs on the earth. Blood; possibly eruption of blood, as some fountains have been reported to have run with blood, and these prefiguring the great effusion of blood by the sword and wars following, or by antichristian persecutions. Fire; either breaking out of the earth, or else unusual lightnings, and unparalleled flashes of lightnings in the lower region of the air, setting many things on fire. Pillars of smoke; from those burning things fired by lightnings, or by extraordinary flashes, a smoke shall go up like a pillar. Particular instances of these may not here be gathered together, but Hottinger, that learned and painful historian, hath gathered many together of the first age, and so of the following ages of the church, in his Ecclesiastical History, which who desireth may consult.