VIII. Although our justification will be fully declared on the last day (our good works also being brought forward as the sign and proof of its truth, Mt. 25:34–40), still falsely would anyone maintain from this a twofold gospel justification—one from faith in this life (which is the first); the other (and second) from works on the day of judgment (as some hold, agreeing too much with Romanists on this point). The sentence to be pronounced by the supreme Judge will not be so much a new justification, as the solemn and public declaration of a sentence once passed and its execution by the assignment of the life promised with respect to an innocent person from the preceding justification. Thus it is nothing else than an adjudicatory sentence of the possession of the kingdom of heaven from the right given before through justification. And if works are then brought forward, they are not adduced as the foundation of a new justification to be obtained then, but as signs, marks and effects of our true faith and of our justification solely by it.
Francis Turretin, Institutes of Elenctic Theology, ed. James T. Dennison Jr., trans. George Musgrave Giger, vol. 2 (Phillipsburg, NJ: P&R Publishing, 1992–97), 16.10.8 (p. 687).
Benjamin Keach, The Marrow of True Justification: The Biblical Doctrine of Justification Without Works, Solid Ground Books, Birmingham, Alabama USA, 2007, p 80
“Once we are justified, we need not inquire how a man is justified after he is justified. God has not appointed this personal evangelical righteousness, in order to our Justification before Him. By that righteousness of Christ which is out of us, though imputed to us, the Justice of God is satisfied; therefore all Works done by us, or inherent in us, are excluded in our Justification before God.
http://www.centralseminary.edu/resources/nick-of-time/justification-and-the-gospel