Jesus used “Kingdom of Heaven” and “Kingdom of God” to refer to God’s rule. That kingdom includes both good and evil. God reigns over both: implementing the good and tolerating the evil. When Jesus warns about the kingdom coming, he’s referring to God’s good agenda pushing forward with the destruction of evil. Through Jesus’ the power of evil is diminished, particularly in terms of the imminent final outcome. In our world both evil and good live side-by-side, warring over minds and hearts and lives. God reigns over all.
On that predetermined day the toleration will end. God’s patience will run out. The good side of the kingdom overwhelms evil. God’s reign will be recognized. Every creature will submit and every evil thing will be destroyed.
Think of it as the great leveling –when heaven overflows onto earth. Evil cannot stand in the presence of heaven and is completely crushed and eliminated. Injustice is corrected by true justice. The beaten down, the weak, the unfairly treated, the persecuted, the unloved and unwanted, all will be lifted up.
For those who trust in God’s reign the Kingdom of God is the greatest kingdom of hope.