Cool!! Means I cannot sin!!
Er no ...
However, I thought it might be useful to pop in with a definition of what 'sin' is, according the Catholic Tradition, at least.
Sin is a moral evil — so what is 'evil'?
Evil is defined by St. Thomas Aquinas (
De malo 2:2) as 'a privation of form or order or due measure.'
In the physical order a thing is 'good' in proportion as it possesses being. God alone is essentially being, and He alone is essentially and perfectly good, and God alone possesses fullness of being (another proof of Jesus' divinity: "For in him all the fulness of God was pleased to dwell" Colossians 1:19).
Every created thing possesses limited being, according to its nature, but in so far as it possesses being, it is good.
Evil implies a deficiency, an imperfection, hence it cannot exist in God who suffers no imperfection nor deficiency.
Evil is found only in finite being which, because of its origin from nothing, can be subject to the privation of form or order or measure due them, and, through the opposition they encounter, are liable to an increase or decrease of the perfection they have: "for evil, in a large sense, may be described as the sum of opposition, which experience shows to exist in the universe, to the desires and needs of individuals; whence arises, among human beings at least, the suffering in which life abounds".
According to the nature of the perfection which it limits, evil is metaphysical, physical, or moral.
Metaphysical evil is not necessarily evil properly so called; it is but the negation of a greater good, or the limitation of finite beings by other finite beings.
Physical evil deprives the subject affected by it of some natural good, and is adverse to the well-being of the subject, as, eg. pain and suffering.
Moral evil is found only in intelligent beings, and it deprives them of some moral good. This may be defined as a privation of conformity to right reason and to the law of God. Since the morality of a human act consists in its agreement or non-agreement with right reason and the eternal law, an act is good or evil in the moral order according as it involves this agreement or non-agreement. When the intelligent creature, knowing God and His law, deliberately refuses to obey, moral evil results.
An 'inability to sin' then, would require the suspension of the removal of the rational faculty to make moral choices (indeed the law allows for just such a circumstance under various aspects of impaired reason).
Man is free to accept or refute God (the one 'real' freedom) and in the absence of the knowledge of God, he is free to listen to or ignore the voice of his conscience. Christian doctrine holds that 'conscience' is the Eternal Law written into the very fabric of our being.
Thomas