Soul Harvest by Jerry B. Jenkins, Tim Lahaye (1999, Paperback)

The last seal judgement is released as a massive worldwide earthquake devastates the Earth. Believers receive the mark of God on their foreheads. Carpathia raises Leon from the dead. Leon gives him the title of "His Excellently" and takes the title "Supreme Commander" for himself. There is some evidence that Amanda, Rafe's wife, is a spy for the Antichrist. The Trib Force loses and gains several new members - Mac, Ken and Chang. The first three trumpet judgements are released - hail, fire and blood from the sky destroying one third of the trees and all the grass, a metorite that hits in the sea causing one third of the sea to be turned to blood and one third of the fish to be killed, and a metorite called Wormwood that broke apart in the atmosphere and poisoned one third of the fresh water sources. Hattie is rescued form GC forces by the Tribulation Force, but not before being poisoned. The Antichrist suspects Rayford of being behind the "terrorist" activities and gives him cause to worry.