What is the meaning of 7 in mythology? This number appears in Revelations for 7 bowls and 7 seals. Many gods from Siberia to Iran and India and over to Mexico are depicted with 7 heads.
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https://youtu.be/HXlBQExlwEo
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Seven Bowls
https://en.wikipedia.org/wiki/Seven_bowls
Seven angels are given seven bowls of God's wrath, each consisting of judgements full of the wrath of God. Loathsome Sores. The sea turns to blood. The waters turn to blood. A major heatwave to scorch the planet with fire. A thick darkness overwhelms the kingdom. The great river Euphrates dries up. A global earthquake causes the cities of the world to collapse.
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Revelation 8:6-7
And the seven angels which had the seven trumpets prepared themselves to sound. The first angel sounded, and there followed hail and fire mingled with blood, and they were cast upon the earth: and the third part of trees was burnt up, and all green grass was burnt up.