What does the Bible say about the two kingdoms in opposition?

According to Scripture, the Kingdom of God was established at creation but was usurped by Satan when Adam fell into sin. This initiated a perpetual conflict between God's kingdom, which seeks justice and righteousness, and Satan's kingdom, which is characterized by strife and rebellion against divine authority. The Gospel reveals this ongoing enmity, with Satan striving for dominion over creation while God reigns supreme, ultimately ensuring that His kingdom will triumph over evil. This theme is threaded throughout the biblical narrative, showing the unfolding of world history as a battle between these two kingdoms, culminating in God's final victory.