You're either in your sins or you have had your sins washed away by the blood of Christ. Eph 1:7. The act of baptism is where a person comes in contact with the blood of Christ. Mark 16.16. That is true because when the guards stabbed the dead body of Jesus upon the cross; the bible said blood and water came out. John 19.34.
In 1 John 5.8, the bible teaches that the Spirit, water and blood agree and that is why baptism works. It contains the blood of Christ, which serves as detergent to wash away the sins of men, thereby saving them and putting them into the body of Christ. Rom 6:1-18. 1 Cor 12.13. Gal 3.27. Jesus shed His blood for the world that by His blood men can be saved. Eph 2.14. Col 1:13-14.20. 1 John 1:7. However, all of that means nothing if a person doesn?t come into contact with the blood. So, that is where baptism comes into the picture. Arise dear reader, be baptized and wash away your sins, calling upon the name of the Lord. Acts 22.16. Rom 10.12-17.