The nature of sin is spiritual, not natural. Lust in the heart is the spiritual seed of sin, not anything natural, whether dust, seed, flesh, blood, or bone. It's the spirit and soul that sins against God, and spiritually dies by sin.
Ezek 18:4
Behold, all souls are mine; as the soul of the father, so also the soul of the son is mine: the soul that sinneth, it shall die.
Only spiritual beings can sin against God, not the natural things of the earth.
Isa 14:12
How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations! For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God:
And so we see that all sin is spiritual in nature, having begun in heaven with the spirits of angels. And likewise, men and women on earth can also sin against God. Not because of natural flesh and blood, but only because of being created like the angels, with spiritual power to conceive our own lust against God:
Mat 15:18
But those things which proceed out of the mouth come forth from the heart; and they defile the man. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies: These are the things which defile a man: but to eat with unwashen hands defileth not a man.
Jas 1:14
Every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.
And so we see that the the nature of all sin is spiritual from the heart, not natural from the flesh.
And, While all angels and men are created with spiritual power to corrupt our own hearts with lust to sin, no angel nor man is created by God with the sin of lust:
Eze 28:15
Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee...Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness:
Jhn 1:2
The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made…That was the true Light, which lighteth every man that cometh into the world.
We are all first created by Christ with the pure heart of the Spirit, but with power to corrupt our heart to lust against the Spirit.
And, Though unlike the angels in heaven, men and women are created with the same natural bodies of all creatures created by God on earth:
Heb 1:7
And of the angels he saith, Who maketh his angels spirits, and his ministers a flame of fire.
Psa 8:4
What is man, that thou art mindful of him? and the son of man, that thou visitest him? For thou hast made him a little lower than the angels, and hast crowned him with glory and honour.
Only the spiritual heart of angels and men have the power to lust and sin against God. The natural seed has no lust in it to sin. The natural tongue has no lust in it to sin. The third middle finger has no lust in it to sin.
Jas 4:5
Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?
Only the spirit and soul of man is guilty of sinning with the natural body, not the body guilty of sinning against the soul.
Ezek 18:4
Behold, all souls are mine; as the soul of the father, so also the soul of the son is mine: the soul that sinneth, it shall die.
Only spiritual beings can sin against God, not the natural things of the earth.
Isa 14:12
How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations! For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God:
And so we see that all sin is spiritual in nature, having begun in heaven with the spirits of angels. And likewise, men and women on earth can also sin against God. Not because of natural flesh and blood, but only because of being created like the angels, with spiritual power to conceive our own lust against God:
Mat 15:18
But those things which proceed out of the mouth come forth from the heart; and they defile the man. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies: These are the things which defile a man: but to eat with unwashen hands defileth not a man.
Jas 1:14
Every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.
And so we see that the the nature of all sin is spiritual from the heart, not natural from the flesh.
And, While all angels and men are created with spiritual power to corrupt our own hearts with lust to sin, no angel nor man is created by God with the sin of lust:
Eze 28:15
Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee...Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness:
Jhn 1:2
The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made…That was the true Light, which lighteth every man that cometh into the world.
We are all first created by Christ with the pure heart of the Spirit, but with power to corrupt our heart to lust against the Spirit.
And, Though unlike the angels in heaven, men and women are created with the same natural bodies of all creatures created by God on earth:
Heb 1:7
And of the angels he saith, Who maketh his angels spirits, and his ministers a flame of fire.
Psa 8:4
What is man, that thou art mindful of him? and the son of man, that thou visitest him? For thou hast made him a little lower than the angels, and hast crowned him with glory and honour.
Only the spiritual heart of angels and men have the power to lust and sin against God. The natural seed has no lust in it to sin. The natural tongue has no lust in it to sin. The third middle finger has no lust in it to sin.
Jas 4:5
Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?
Only the spirit and soul of man is guilty of sinning with the natural body, not the body guilty of sinning against the soul.