The emphasis is similar to the one we give as we exclaim “for the love of God! “By making a very important call, to which you really want your caller to respond.
The mercies of God that must be highlighted are those great spiritual realities Paul has been writing about in the previous eleven chapters of this great epistle.
In studying the letter to the Romans TOP Hinos Evangélicos  in detail, we can see that Paul is continually highlighting some aspects of these wonders. We have no room here for a more in-depth analysis of these expressions, but we find in the book of Romans many gifts and undeserved favors from God to man:

  • Love
    Eternal life
    …. and much more!

These gifts, freely given by God’s mercies to man, are already guaranteed to each of us by the plan of salvation described by Paul between chapters 1 to 11. As the psalmist says in Psalms 16:12 – “I will give the Lord , for all the benefits you have made me? “
As a result of this mighty work of Christ’s ministry, of the salvation that came to us through the cross and the resurrection, we should be moved, motivated, driven, guided by the admirable mercies of God given to us to worship Him.
That you present your bodies
“Present” (or offer, offer, bring). The Greek word parastesai, in the sense presented by the context, is a term used in the temple, a priestly term. The same word is used in Luke 2:22, when the baby Jesus was taken to Jerusalem, “to present him to the Lord.”
The book of Leviticus widely uses the Hebrew equivalent amad, which occurs in the expression “present to the priest” (the animal, the person, the offering).
As Paul here refers to “your bodies,” he means all our human faculties. it is important to note that in the Hebrew mentality there is no dichotomous separation between body and mind, which is the fruit of Greek culture.
In 1 Corinthians 9:27, Paul said, “I subdue my body, and bring it into subjection.” He means by that, all that is human, carnal, earthly.
With that phrase, Paul means: Stand on the altar, die for your own purposes, for everything around you and give up all your humanity, all that you are before God. That is, offer your whole life in worship. Worship, for Paul here, is a way of life, it is life itself.


In living sacrifice
As we have already seen, the language here is the Levitical service language of the temple. An offerer in the temple brought his sacrifice to God outside the Holy Place in the courtyard and handed it to the High Priest. The Priest took the sacrifice and presented it to God on the altar.
For the sacrifice to be effective in the forgiveness of sins, the sinner was to confess his sins on the head of the animal. It symbolized a worsening heart, for this is what God really wanted, even in the Old Testament. God was never pleased with a purely external offering. He wanted the heart. He always wanted the heart.
Let us look at the following texts of the Old Testament, when the sacrificial system was still in full force:
1 Samuel 15:22 – Is the LORD to delight in burnt offerings and sacrifices, as well as in obeying the word of Jehovah? Behold, to obey is better than to sacrifice; and to suit him better than sheep’s fat.
Psalms 51:17 The acceptable sacrifice to God is a broken spirit; to the broken and contrite heart you will not despise, O God.
Isaiah 1: 11-15 – What good is the multitude of your sacrifices unto me, saith the LORD? I have had enough of the burnt offerings of rams, and of the fat of fatlings; nor do I delight in the blood of calves, nor of lambs, nor of goats. When you come to appear before me, who has required this at your hands, that you should tread upon my courts? Do not keep offering vain offerings; the incense is an abomination to me, and the new moons, and the sabbaths, and the convocation of the assemblies; I can not bear iniquity, not even the solemn meeting. Your new moons, and your solemnities, my soul hates them; they are heavy; I’m already tired of suffering them. Therefore, when you stretch out your hands, I hide my eyes from you; and though you multiply your prayers, I will not hear them, because your hands are full of blood.
Hosea 6: 6 For I desire mercy, and not sacrifice; and the knowledge of God, more than burnt offerings.