Romans 12:1
I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.

2 Corinthians 9:11-12

11  Being enriched in every thing to all bountifulness, which causeth through us thanksgiving to God.
12  For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God;