What does the Bible say about spiritual sacrifice?

Spiritual sacrifices encompass acts of love and service rendered to God and others, exemplified in Philippians 4:18 where Paul refers to the gifts from the Philippians as an 'odor of a sweet smell, a sacrifice acceptable, while pleasing to God.' This aligns with the biblical teaching that all believers are called to be a royal priesthood, presenting sacrifices of praise and good works. 1 Peter 2:9 highlights that as believers, we are a chosen generation, called to show forth God's praises through our actions. Good works do not earn salvation but are the evidence of our faith, reflecting our gratitude for God’s grace in Christ.