Turretin, on the topic of whether Justification is by imputation or infusion writes:
"Unde colligitur vocem hanc esse forensem quae non est intelligenda physice de infusione justitiae sed judicialiter et relative de gratuita acceptione in judicio dei."
Turretin's Works, Edinburgh edit., vol. ii., p. 570.
Which, being interpreted is:
"Whence it may be inferred that this word (to impute) is not to be understood physically of the infusion of righteousness (or unrighteousness), but judicially and relatively regarding gratuitous acceptance in the judgment of God."