The phenomenon of the moon turning to blood, as described in biblical prophecies, has captured significant attention due to recent lunar eclipses coinciding with biblical holy days. Joel 2:31 states, "The sun shall be turned into darkness, and the moon into blood, before the coming of the great and awesome day of the Lord." This imagery of the moon turning red is also referenced in the Sixth Seal of Revelation, where it is accompanied by disturbances in the sun, stars, and the sky itself, indicating that far more than mere eclipses will occur during this time. These cosmic events, including the moon turning to blood, are part of a larger upheaval where the stability of the heavens is disrupted, as God declares in Haggai 2:6 and 21 that He will shake the heavens, and Christ in Matthew 24:29 states that the powers of the heavens will be shaken. Such disturbances, which also include the earth being moved out of its place as noted in Isaiah 13:13, render predictable calculations of eclipses impossible, distinguishing these events from the recent tetrad of lunar eclipses observable through regular celestial patterns. Furthermore, the timing of these cosmic signs, including the moon turning to blood, is set after the Fifth Seal's martyrdom and a period of unprecedented tribulation, suggesting that the current sequence of blood moons, while symbolically significant due to their alignment with holy days, does not yet align with the full scope of prophetic fulfillment described in the Sixth Seal.

In the sequence of catastrophic events leading to the return of Jesus Christ, the heavenly signs of the sixth seal mark a significant moment of divine intervention. Among these signs, the moon appears blood-red, a disturbing atmospheric phenomenon that signals the impending wrath of God. This transformation of the moon accompanies other cosmic disturbances, such as the darkening of the sun, the falling of stars, and the receding of the sky like a scroll. These events, occurring after the Great Tribulation and before the Day of the Lord, instill mortal fear in all who witness them, as they herald the final retribution of God upon a sinning world. The blood-red moon stands as a vivid symbol of the environmental and spiritual upheaval that characterizes this critical juncture in the unfolding of divine judgment.

Joel speaks of the Day of the Lord, a time of blood and fire marking God's wrath, immediately preceding the Millennium. Among the signs of this apocalyptic period, Joel describes the moon turning to blood, accompanied by pillars of smoke and darkness. Peter, in his sermon on Pentecost, quotes Joel's prophecy, connecting these dramatic signs to the events he witnessed. Though the moon did not turn to blood on that specific day or during Christ's death, Peter saw in Joel's words a broader significance, pointing to the ultimate hope and salvation that God offers through these tumultuous signs. The imagery of the moon turning to blood underscores the gravity of the divine judgment and the transformative era that follows, heralding the widespread availability of His Holy Spirit as the Millennium begins.