Why is the concept of the everlasting kingdom important for Christians?

The concept of the everlasting kingdom is crucial for Christians as it signifies God's ultimate sovereignty and faithfulness to His promises. This kingdom, described in Revelation 11:15, assures believers that despite worldly trials and tribulations, God reigns supreme. The anticipation of this kingdom inspires hope and courage in Christians today, urging them to live in light of Christ's reign and to share in the peace He offers. Furthermore, it reinforces the belief that Christ will return to fully realize His kingdom, ultimately defeating death and sin.