The same Spirit that raised Jesus from the dead, will raise us  -  Romans 8:11

But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall also quicken your mortal bodies by his Spirit that dwelleth in you.

Just because our body is still subject to death should not cause us to be alarmed or discouraged. The fact that the Holy Spirit indwells our bodies is a guarantee that, just as He raised Christ from the dead, so He will also give life to our mortal bodies. This will be the final act of our redemption – when our bodies are glorified, like the Saviour’s body in glory.