For ye are bought with a price: therefore, glorify God in your body, and in your spirit, which are God’s. – 1 Corinthians 6:20
I am the resurrection, and the life: he that believeth in Me, though he were dead, yet shall he live. – John 11:25
Our body and our spirit are God’s and, Christian, this is certainly a very high honor to you. Your body will rise again from the dead at the first resurrection, because it is not an ordinary body, it belongs to God: your spirit is distinguished from the souls of other men; it is God’s Spirit, and He has set His mark upon it, and honored you in so doing. You are God’s, because a price has been paid for you. According to some, the allusion price here is to the dowry that was paid by a husband for his wife in ancient days. According to the Rabbis there were three ways by which a woman became the wife of a man, and one of these was by the payment of a dowry. This was always held good in Jewish law; the woman was not her own from the moment when the husband had paid to her father or natural guardian the stipulated price for her. Now, at this day, you and I rejoice that Jesus Christ has espoused us unto Himself in righteousness or ever the earth was; we rejoice in that language which He uses by the prophet Hosea, “I will betroth thee unto Me for ever;” but here is our comfort, the dowry money has been paid, Christ has redeemed us unto Himself, and Christ’s we are, Christ’s for ever and ever.
Remember that our Lord has paid all the price for us; there is no mortgage or lien upon us; we have therefore no right to give a portion of ourselves to Satan. And He has bought us entirely from head to foot, every power, every passion, and every faculty, all our time, all our goods, all that we call our own, all that makes up ourselves in the largest sense of that term; we are altogether God’s. Ah! it is very easy for people to say this, but how very difficult it is to feel it true and to act as such!…A real redemption demands real holiness. A true price, most certainly paid, demands from us a practical surrendering of ourselves to the service of God. From this day forth even for ever, “ye are not your own,” ye are the Lord’s. ~ C. H. Spurgeon
https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1004.cfm