I beseech you therefore, brethren, by the mercies of God, that you present your bodies a living sacrifice, holy, acceptable to God, which is your reasonable service.
In the Old Testament, the sacrifices were dead, as the priests killed the lamb, drained the blood and then presented it to the Lord. In the New Testament, Christ was the last sacrifice, the Lamb of God who takes away the sins of the world. After His resurrection, Paul declared the Christian is to be a living sacrifice. He commanded us to bring our whole bodies as a sacrifice to the Lord.
There is a story of an old Indian man who went to church. He heard the worship with the choir and the sermon before they came to take up the offering. The ushers came by with a basket, and passed it down.
When the basket came to the Indian man, he walked out to the aisle and put the basket on the floor. Then, he stepped into offering and said, “This is all I have to give to God.”
This is what Paul was teaching. God does not want your money. He wants you — all of you. He wants your ears, your eyes, your hands, your feet and your heart; everything you have is His.
In the Old Testament, the priests would put oil on their ear, their hand and their feet. It was the anointing of the Holy Spirit. I put it on my ear, so I can hear the voice of God; on my hands, to do the work of God; and on my feet, so I can walk in the ways of God. That is what God wants in our lives. He wants you to serve Him with everything.
If the service of God is worth anything, it is worth everything. -C. H. Spurgeon-