When will God's wrath become evident?
God's wrath becomes evident once the seven-year Tribulation starts. Until then, disasters, floods, and earthquakes are not His wrath but are permitted as Satan's activity. When the Tribulation begins, God finally judges mankind for total rebellion and wickedness, and the plagues come in one day.
Les explains that the world has enjoyed God's grace for almost two thousand years. The disasters, floods, and earthquakes are not God's doing; He permits them, but Satan is primarily the god of nature today, so the world's suffering and disasters are not God's wrath yet. Once the seven-year Tribulation starts, God's wrath becomes evident, and He finally pays mankind for total rebellion and wickedness. The plagues come in one day, and Les, as a literalist, thinks it will happen in a matter of hours. This whole world system will calamitously disappear, burned with fire, because strong is the Lord God who judges her.