'Service' in the Bible

I know thy works, and charity, and service, and faith, and thy patience, and thy works; and the last to be more than the first.

because of this are they before the throne of God, and they do service to Him day and night in His sanctuary, and He who is sitting upon the throne shall tabernacle over them;

in the midst of its broad place, and of the river on this side and on that, is a tree of life, yielding twelve fruits, in each several month rendering its fruits, and the leaves of the tree are for the service of the nations;

There will no longer exist anything that is cursed [because sin and illness and death are gone]; and the throne of God and of the Lamb will be in it, and His bond-servants will serve and worship Him [with great awe and joy and loving devotion];