I think what you have written here is not quite correct.
There are no stages to justification or sanctification. It is just one process where…
In fact any process may be accomplished in stages. Therefore, the fact that it is one process is no argument against the idea that it is accomplished in stages.
God gives the initial grace for us to respond. The initial grace is not justification.
Indeed it is. See the letters in red:
2010 Since the initiative belongs to God in the order of grace,
no one can merit the initial grace** of forgiveness and justification,** at the beginning of conversion. Moved by the Holy Spirit and by charity,
we can then merit for ourselves and for others the graces needed for our sanctification, for the increase of grace and charity, and for the attainment of eternal life. Even temporal goods like health and friendship can be merited in accordance with God’s wisdom. These graces and goods are the object of Christian prayer. Prayer attends to the grace we need for meritorious actions.
It is simply an initiative on the part of God who so passionately loves His creation. At the moment of the first response (whether it be by faith or work) we are not justified yet.
But justification has begun.
We can only be said to have been justified when we get to heaven and the process of deification is completed because we have been conformed to the image of Christ.
In fact, we had better be justifiied throughout our lives or we may never be deified:
**CHAPTER X
THE INCREASE OF THE JUSTIFICATION RECEIVED
**Having, therefore, been thus justified and made the friends and domestics of God,[49] advancing from virtue to virtue,[50] they are renewed, as the Apostle says, day by day,[51] that is, mortifying the members[52] of their flesh, and presenting them as instruments of justice unto sanctification,[53] they, through the observance of the commandments of God and of the Church, faith cooperating with good works, increase in that justice received through the grace of Christ and are further justified, as it is written:
He that is just, let him be justified still;[54] and, Be not afraid to be justified even to death;[55] and again, Do you see that by works a man is justified, and not by faith only?[56]
This increase of justice holy Church asks for when she prays:
“Give unto us, O Lord, an increase of faith, hope and charity.”[57]
ewtn.com/library/councils/trent6.htm
Till then there is just the process of deification or theosis.
That is simply another term for the process of justification.
We are justified in the eyes of God when we have been** made **
just. We are declared just not merely forensically but rather grace has had this ontological effect on the soul such that we become truly just, hence can be declared just. That is true but in no way denies the fact of a continuing process of justification in stages. Several stages. Not just one or two.
The Catholic view is not just comprehensive, it does not have any this dichotomy between initial justification and sanctification.
It depends upon what you mean by dichotomy. If you mean two views which are opposed to each other, you are correct.
But I did not make any such division. I am explaining the various stages of justification and they are not opposed to each other. Initial justification or the beginning of justification is explained in Trent:
CHAPTER V
THE NECESSITY OF PREPARATION FOR JUSTIFICATION IN ADULTS, AND WHENCE IT PROCEEDS
It is furthermore declared that in adults the beginning of that justification must proceed from the predisposing grace of God through Jesus Christ, that is, from His vocation, whereby, without any merits on their part, they are called;
And sanctification is part and parcel of that same process of justification. It is the part that goes on in the Sacraments where we receive Sanctifying grace:
**CHAPTER VII
IN WHAT THE JUSTIFICATION OF THE SINNER CONSISTS, AND WHAT ARE ITS CAUSES
**
This disposition or preparation is followed by justification itself, which is not only a remission of sins but also the sanctification and renewal of the inward man through the voluntary reception of the grace and gifts whereby an unjust man becomes just and from being an enemy becomes a friend, that he may be an heir according to hope of life everlasting.[30]
cont’d