1 Peter 1:5

5 who are protected by the power of God through faith for a salvation ready to be revealed in the last time.

Not only is our inheritance protected and preserved eternally; we are protected by the power of God until we are glorified and arrive in heaven. We may die before our glorification (a temporary setback), but when He comes we will be resurrected and glorified (1Cor. 15:52; 1 Thess. 4:15-17).