So long as space remains,
So long as sentient beings remain,
I will remain,
In order to help, in order to server,
In order to make my own contribution.
~ one of the Dalai Lama's favorite prayers
Angels show their love for God through their service of other creatures, just as we are enjoined to show our love for God by serving one another. Angels make God's goodness concrete, both in this life and in the life to come.