There will be no more night. They will not need the light of a lamp or the light of the sun, for the Lord God will give them light. And they will reign forever and ever.
We are called joint heirs with Christ. We will own property, residences in heaven. We will enjoy those treasures that we have laid up for ourselves in heaven while on earth.
Revelation 22:5 says we will reign with Christ over the earth. Luke 19 tells us those who have been faithful in this life will be placed in authority, some over one city, some five, some ten. 1 Corinthians 6 tells us we will judge or rule over angels.
How else will we serve Christ besides ruling? Well, we will be creative and exercise abilities–all will sing and some will play instruments. (Harp and trumpet mentioned, but no doubt many other instruments too.)
We will no doubt compose, write, paint, carve, build. We will exercise our God-given gifts, and continue to develop and perfect our talents.
No time to talk about the rewards we will be given… but they are many…