The following verse has often puzzled me:
Now if we are children, then we are heirs — heirs of God and co-heirs with Christ, if indeed we share in his sufferings in order that we may also share in his glory.
Romans 8:17, NIV
It puzzled me because the phrase "heirs of God" suggests that we are meant to inherit something when God dies. And he isn't going to.
But actually it turns out it's a bad translation (but so are most others) and latching on to a concept in Biblical theology.
The concept is the one of inheritance. The inheritance of the Israelites was the land that they got because of God's promise to them - each of them had an inheritance in the Promised Land. It didn't mean they had to die to get it - it meant it was a bit of land which they got which couldn't be taken away from their family.
And the word "heirs" in Romans 8:17 is better translated "inheritors". It means that what we get is God, and is with Christ.