Easton’s Bible Dictionary

Lightning : frequently referred to by the sacred writers (Nahum 1:3-6). Thunder and lightning are spoken of as tokens of God's wrath (2 Samuel 22:15; Job 28:26; 37:4; Psalm 135:7; 144:6; Zechariah 9:14). They represent God's glorious and awful majesty (Revelation 4:5), or some judgment of God on the world (Revelation 20:9).