Romans 6:4

We were buried therefore with him through baptism into death: that like as Christ was raised from the dead through the glory of the Father, so we also might walk in newness of life. [The apostle's argument rests on the nature of Christ's death, etc. Jesus died to take away our sins, to bear them for us, and rid us of them (John 1:29; 1 Peter 2:24); but in order that he may do this for us, so that we may partake of the benefits of his death, it is necessary that he be our representative; i. e., that we be in him, and in him at the very time when he thus gave himself unto death, so that his death becomes, representatively, our death. To aid us in conceiving the accomplishment of this unity with him in the act of death, the ordinance of baptism was instituted, so that, by it, we are not only baptized into him, but also into his death. One purpose, therefore, of baptism is to so unite us with him that, in him, we may die to sin and a life in a sinful kingdom of darkness, and rise to live again in righteousness in a sinless kingdom of light (Romans 7:4; Romans 8:13; Galatians 2:19-20; Galatians 5:24; Galatians 6:14; Colossians 2:11-20). Such being the nature of the ordinance, it precludes the idea that a baptized person could continue to commit sin. You must therefore recognize, says the apostle, that in baptism you died with Christ unto sin, or are ye so ignorant of the meaning of that ordinance that you do not understand that it symbolizes your death to sin and your resurrection to righteousness? If you are thus ignorant, then know that all we who were immersed into Christ were immersed into his death. We were buried with him, through immersion, into death as to our sin: that like as Christ was raised from the dead, because the glory of the just and holy Father required it, so we also might walk or act in a new manner of life; i. e., a sinless life. Thus baptism, which is a burial and resurrection performed in water, attests, in the strongest manner, the Christian's obligation to be sinless. Only the dead are buried. Brief as is the momentary burial of the immersed, it is, nevertheless, a seal of their death to sin, and hence of their cleansing from it (Acts 2:38; Acts 22:16). Only the resurrected rise from the grave. Therefore, one who has not fully resolved to live as having died unto sin has no right to be lifted from the waters of baptism. If he is still dead in trespasses and sin, he should remain buried.]