Hebrews 12:21
And the sight [of all these things] was so terrifying that Moses said [See Deut. 9:19], "I tremble with fear."
Hebrews 12:18-19
[Unlike the Israelites at Mount Sinai] you [Christians] have not come to a mountain that can be touched and that burned with fire [See Ex. 19:12, 16-19; 20:18-21; Deut. 4:11]; to [a place of] darkness, gloom and wind;
Revelation 4:1
After [seeing all] these things, I looked, and there in heaven I saw [a vision of] an open door, and the voice I had first heard speaking to me like [the sound of] a trumpet [See 1:10], said, "Come up here [i.e., to heaven], and I will show you the things which must happen after these things [i.e., the things just revealed]."
Revelation 4:5
And lightning flashes and [loud] sounds of rolling thunder came out of God's throne. And there were seven lighted torches burning in front of the throne, which are the seven Spirits of God [i.e., the Holy Spirit. See 1:4].
Revelation 8:5
Then the angel took the incense holder and filled it with hot coals from the Altar and threw it to the earth. [Immediately] there was [heard] rolling thunder, and lightning flashes [were seen] and an earthquake [was felt].
Revelation 11:19
Then God's Temple in heaven was opened, and inside of it was seen the Chest containing God's Agreement [i.e., between Him and Israel]. [Immediately] there came lightning flashes, [loud] sounds, rumbling thunder, an earthquake and a severe hailstorm.
Revelation 1:10
I was in [i.e., under the influence of] the Holy Spirit on the Lord's day [i.e., Sunday], when I heard behind me a loud voice, like a trumpet,