…the Son who in His Incarnation and Resurrection brings about justification, so it is, in more limited sense, the Holy Spirit particularly who reveals this justification to the persons of the elect and causes them to appropriate it to themselves. It is by this act of the Holy Spirit that the elect obtain the blessed knowledge of their justification, which only then begins to be a living reality to them.
For this reason Scripture reveals these two positive, but apparently contradictory truths, with equally positive emphasis:
(1) that, on the one hand, He has justified us in His own judgment-seat from eternity; and
(2) that, on the other, only in conversion are we justified by faith.
And for this reason faith itself is fruit and effect of our justification; while it is also true that, for us, justification begins to exist only as a result of our faith.
Abraham Kuyper, The Work of the Holy Spirit