'Service' in the Bible

are they not all spirits of service -- for ministration being sent forth because of those about to inherit salvation?

and now he hath obtained a more excellent service, how much also of a better covenant is he mediator, which on better promises hath been sanctioned,

It had, indeed, then (even the first tabernacle) ordinances of service, also a worldly sanctuary,

and both the tabernacle and all the vessels of the service with blood in like manner he did sprinkle,