TCR 736 - what is meant by kings and princes and by reigning with Christ

TCR 736 [3]

After three hours heaven was opened above their heads,
and the angels looked down and pitied them.
'Why,' they said, 'do you sit like this
looking foolish and playing at acting?
They have made fools of you
and changed you from human beings into dummies,
because you believed in your hearts
that you would reign with Christ as kings and princes,
and that then angels would wait upon you.
Have you forgotten the Lord's words,
that he who would be great in heaven
must become a servant?
You must learn therefore what is meant
by kings and princes and by reigning with Christ.
This means being wise and performing services.
For Christ's kingdom, which is heaven,
is a kingdom of services.
For the Lord loves all and so wishes to do good to all,
and good is service.
Since the Lord does good or performs services
indirectly through angels,
and in the world through people,
He gives those who faithfully perform services
a love of service and its reward,
which is inward blessedness,
and this is everlasting happiness.