RELATIONSHIP TO GOD
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 [Rom. 12:1].
In other words: Therefore, I beg of you, brethren, by the mercies of God that you yield your bodies—your total personalities—a living sacrifice, set apart for God, well-pleasing to God, which is your rational or spiritual service.
Notice that the “therefore” ties it into everything that has come before it. Although it has immediate connection with that which has just preceded it, I am of the opinion that Paul is gathering up the whole epistle when he says, “Therefore.”
“I beg of you” is the language of grace, not law. There is no thunder here from Mount Sinai. Moses commanded; Paul exhorts. Could Paul have commanded? Well, he told Philemon that he could have given him a command, but he didn’t. Paul doesn’t command; he says, “I beg of you.”
“By the mercies of God”—the plural is a Hebraism, denoting an abundance of mercy. God is rich in mercy; God has plenty of it, my friend. He has had to use a lot of it for me, but He still has plenty of it for you. “Mercy” means compassion, pity, and the tenderness of God. His compassions never fail.
We are called upon to “present”—to yield. This is the same word we had, you recall, back in chapter 6. Although some expositors suggest that there it refers to the mind while here it refers to the will, I think it is a false distinction. The appeal in both instances is to the will. In the sixth chapter, the way to Christian character is to yield to Him. Here yielding is the way to Christian consecration and conduct.
He says to yield “your bodies,” your total personalities. The body is the instrument through which we express ourselves. The mind, the affections, the will, and the Holy Spirit can use the body.
Vincent has assembled the following Scriptures which reveal this wide latitude. We are told to glorify God in our bodies. “For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s” (1 Cor. 6:20). “According to my earnest expectation and my hope, that in nothing I shall be ashamed, but that with all boldness, as always, so now also Christ shall be magnified in my body, whether it be by life, or by death” (Phil. 1:20). “Always bearing about in the body the dying of the Lord Jesus, that the life also of Jesus might be made manifest in our body” (2 Cor. 4:10).
By an act of the will we place our total personalities at the disposal of God.
This is our “reasonable service,” our rational service, and it is well-pleasing to God.
McGee, J. Vernon: Thru the Bible Commentary. electronic ed. Nashville : Thomas Nelson, 1997, c1981, S. 4:728-729