A Paradox Involved with the all Holy Creator with knowledge of the Consequent Creature's Sin.

The existence of God may be proven from reason in at least five ways according to St Thomas Aquinas as elaborated in natural theology. A conclusion of natural theology is, God is pure act, or God is act without limit. Following this conclusion one may also conclude the God of reason is also holiness without limit.

God is act without limit.
Act without limit is all perfection had simply without limit.
Personhood is a perfection.
God is personhood without limit.
Therefore God is a divine person.
A person is a subject as a spirit.
For a spirit is that which exists and acts without a body.
A spirit acts to know via the intellect and love via the will.
Therefore, God acts from intellect and will.
But because God is pure act, God's will is act without defect and thereby without fault.
And what is without fault is impeccable.
And what is impeccable is holy.
Therefore God's will is holy.
Because all is simple in God, what God has, God is.
God has holiness, then God is holiness.
And what is all holy is without sin.
1) Therefore God cannot sin.

It has been revealed that God created the universe which includes free secondary agents such as angels and men.
Both angels and men can and have sinned.
But angels and men exist because God chose to create.
And because God is all knowing, God chose to create creatures He knew would sin.
Therefore sin exists because God acted as a cause of creatures.
And what is a principal cause is a cause of all that follows upon the principle.
Sin follows upon the principal cause of God acting as the creator of all creatures.
Therefore God is a cause of sin, and as a cause is responsible for sin.
2) God then in some manner, sins.

Discussion - Therefore there is either a contradiction or a paradox that follows upon the existence of God as all holy and God who creates creatures who sin in accord with the denial and affirmation of God sinning in 1) and 2) above respectively. For God as all holy has nothing to do with sin. Yet God as creator is involved and in some manner responsible for sin. There is, however, no contradiction, for God does not sin formally by acting to create any free agent. For sin only requires that a free agent act unlawfully. And as creatures are free and act unlawfully, the imputation of sin is applied directly, or formally to the creature that misuses the free will to act against the eternal law. God is then responsible for sin as creator, but no sin is imputed to God as the principal cause of creation.
For God as the principal cause is not the secondary cause that acts to sin.

The apparent contradiction as shown above in 1) and 2) is really a paradox of God acting both without and as a cause of sin. For a paradox is an apparent contradiction, in which the affirmation and negation occur in different respects. 1) God is all holy formally according to His nature and will without defect. But God is also 2) materially responsible for sin through the act of creation which provides the circumstance for sin to exist.

Therefore the all-holy God who creates involves a paradox of holiness and sin in relation to the same God.