The main Bible message is, what the Kingdom of God is going to accomplish for the Earth and for the survivors of the end of this system, also for all those that will be resurrected.
Jesus and his disciples knew that at a set time, God himself would establish a government in heaven to rule over the entire earth. The Bible calls this government God’s Kingdom and reveals that Jesus Christ has been appointed as its King. Rev 11:15
Since that Kingdom affects all humans, Jesus made the good news of the kingdom of God the main subject of his teachings. Luke 4:43
He also taught his disciples to pray: “Let your kingdom come.” Why? Because under that Kingdom, God’s will is sure to be done in heaven and on earth. Matt 6:9, 10
What, then, will happen to man-made governments? The Bible answers that the governments of the entire inhabited earth will be destroyed.