What does Revelation 6:17 mean?

Prior verses indicated massive terror, in the face of natural disasters. Interestingly, these events seem to spur humanity to admit something typically suppressed: an admission that God is God, and that what's happening is His judgment.

In this verse those who call upon the rocks to fall on them and hide them from God's face and the Lamb's wrath believe "the great day of their wrath has come." They rightly interpret the disasters in nature as judgments from God and from Jesus Christ (Revelation 5:5–7). They identify the period of judgments as "the great day of their wrath." The prophet Joel prophesied about this time as "the day of the LORD" (Joel 1:15). His description of the day of the Lord fits what happens with the sixth seal judgment. He cites "a day of darkness and gloom, a day of clouds and thick darkness!" (Joel 2:2). He also predicted the earth would quake, the heavens would tremble, the sun and moon would be darkened, and the stars would withdraw their light (Joel 2:10).

Those who experience the judgments described in Revelation 6:12–16 question who can stand in the day of the wrath of God and the Lamb. From their perspective, the answer seems to be "nobody." However, their question is partially answered in Revelation chapter 7 with the sealing of 144,000 Jews saved during the tribulation. Also, Romans 8:1 promises that believers will never experience God's wrath. It says, "There is therefore no condemnation for those who are in Christ Jesus."