One who touches the dead body of any human being shall be unclean seven days. He shall purify himself with [water for impurity] on the third day and on the seventh day, and then he shall be clean; but if he does not purify himself on the third day and on the seventh day, he shall not be clean. Whoever touches a dead person, the body of a human being who has died, and does not purify himself, defiles the tabernacle of Jehovah; and that person shall be cut off from Israel. Because the water for impurity was not sprinkled upon him, he shall be unclean; his uncleanness is still on him. This is the law when a man dies in a tent: Anyone who comes into the tent and everyone who is in the tent shall be unclean seven days. And every open vessel, which has no covering tied down on it, is unclean. And whoever in the open field touches one who has been slain with a sword or a dead body or a human bone or a grave shall be unclean seven days. And for the unclean they shall take of the ashes of the burning of the sin offering, and running water shall be added to them in a vessel; and a clean person shall take hyssop, and dip it in the water, and sprinkle it on the tent and on all the furnishings and on the persons who were there, or on the one who touched the bone or the one slain or the one who died or the grave. Numb 19.
Beloved, I entreat you as strangers and sojourners to abstain from fleshly lusts, which war against the soul.
The wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
We have been buried therefore with Him through baptism into His death, in order that just as Christ was raised from the dead through the glory of the Father, so also we might walk in newness of life. Rm 6.
You asked before about 2 Cor 7:1, Mr Salah. Defilement of spirit refers to that which deadens the spirit. Of course sin does. There are sins with our body, our mind (Salah's soul's leading part). Then there are portions like Numb 19 in the OT, which (like most of the Law) serves the purpose, primarily, of allegorizing Christians' spiritual experience. (In other words, the only way to know is to experience.) The death there, and in 2 Cor 6, is by association. (Context often, if not always, determines what words mean.)
Do not become dissimilarly yoked with unbelievers. For what partnership do righteousness and lawlessness have? Or what fellowship does light have with darkness? And what concord does Christ have with Belial? Or what part does a believer have with an unbeliever? And what agreement does the temple of God have with idols? For we are the temple of the living God, even as God said, “I will dwell among them and walk among them; and I will be their God, and they will be My people.” Therefore “come out from their midst and be separated, says the Lord, and do not touch what is unclean; and I will welcome you”; “And I will be a Father to you, and you will be sons and daughters to Me, says the Lord Almighty.” 2 Cor 6.
Paul the apostle already addressed much the fleshy and fleshly sins of those believers in his first and this letter to them in Corinth. The end of 2 Cor 6 touches our mere connection with nonbelievers. Your soul is your 'person.' With your power of choice, as well as intellect and emotion. The immediate context of 1 Pet 2:11 is the fleshly, bodily, lusts in that very sentence. And they war against the soul.
I see a different law in my members, warring against the law of my mind and making me a captive to the law of sin which is in my members. Wretched man that I am! Who will deliver me from the body of this death?...with the mind I myself serve the law of God, but with the flesh, the law of sin. Rm 7.