The flashing of light. Lightning in the Bible often shows God's presence. It appears at important moments, such as:
When God comes to Mount Sinai to give Moses the Ten Commandments (Exodus 19:16)
When describing Jesus's return (Matthew 24:27)
In visions of God (Ezekiel 1:14; Daniel 10:6)
The book of Revelation often uses lightning as a symbol. This book mainly aims to give a vision of God (Revelation 4:5; 8:5; 16:18).
Lightning can represent different aspects of God:
God's judgment against enemies (2 Samuel 22:15; Revelation 16:18)
God's power and rule over all creation (Psalm 135:7)
In the book of Job, God mentions lightning to show Job how great creation is. This helps Job understand how small he is compared to God and creation (Job 38:35; compare Psalm 77:16–18).