So, brothers and sisters, because of God's mercies, I encourage you to present your bodies as a living sacrifice that is holy and pleasing to God. This is your appropriate priestly service.
References for Romans 12:1
Don't be conformed to the patterns of this world, but be transformed by the renewing of your minds so that you can figure out what God's will is—what is good and pleasing and mature.
Because of the grace that God gave me, I can say to each one of you: don't think of yourself more highly than you ought to think. Instead, be reasonable since God has measured out a portion of faith to each one of you.
References for Romans 12:3
We have many parts in one body, but the parts don't all have the same function.
In the same way, though there are many of us, we are one body in Christ, and individually we belong to each other.
We have different gifts that are consistent with God's grace that has been given to us. If your gift is prophecy, you should prophesy in proportion to your faith.
If your gift is service, devote yourself to serving. If your gift is teaching, devote yourself to teaching.
If your gift is encouragement, devote yourself to encouraging. The one giving should do it with no strings attached. The leader should lead with passion. The one showing mercy should be cheerful.
Love should be shown without pretending. Hate evil, and hold on to what is good.
Love each other like the members of your family. Be the best at showing honor to each other.