Infused Grace
By accenting the requisite reversal of human will, Calvin not only seemingly grants a degree of what can be described as nothing less than infused grace which is necessary for justification, but he also underlines the exclusion of cooperation in human willing spiritual good, excluded because the willing will is produced by divine monergism, not left to the uncertain and weakened disposition of the person. Or, as Calvin puts it elsewhere: "The whole may be thus summed up—Their error consists in sharing the work between God and ourselves, so as to transfer to ourselves the obedience of a pious will in assenting to divine grace, whereas this is the proper work of God himself.
Craig Carpenter, A Question of Union With Christ? Calvin and Trent on Justification, pg. 375