Paul then calls this offering “rational” worship. “Present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship” (Rom. 12:1). The ESV has “spiritual worship,” with a footnote—“Or your rational service.” The NKJV has “reasonable service.” The word “spiritual” is not in the Greek. The Greek word is logikos, which literally means, “rational.” It refers to “being true to the real and essential nature of something – ‘rational, genuine, true.’” (Louw-Nida) Thus, “reasonable” worship is worship that is true worship.
What is true and fitting for the people of God? They are to be living sacrifices. They are to be holy and acceptable sacrifices. That is true worship.