https://www.livingafruitfullife.com/biblestudy/eclipses-in-the-bible-celestial-signs-their-divine-messages
Revelation 6:12 describes the opening of the sixth seal, causing a great earthquake, the sun turning black "like sackcloth made of goat hair," and the moon becoming "like blood"
Joel 2:31 offers a vivid image that many have associated with celestial phenomena: "The sun will be turned to darkness and the moon to blood before the coming of the great and dreadful day of the Lord"
Matthew 27:45 states, "From noon until three in the afternoon darkness came over all the land."
"In Christian theology, the darkness at Christ's crucifixion symbolizes the weight of the sins of the world being borne by Jesus, indicating a moment of profound spiritual significance. Similarly, prophetic passages like those in Joel and Revelation use celestial imagery to convey the seriousness of God's messages and the certainty of His promises, both for judgment and redemption."