Thoughts on Imputation

Psalm 32:2
Blessed is the man unto whom the LORD imputeth not iniquity, and in whose spirit there is no guile.
Romans 4:6
Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works, 
Romans 4:8 
Blessed is the man to whom the Lord will not impute sin. 
Romans 4:11 
And he received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also: 
Romans 4:22 
And therefore it was imputed to him for righteousness. 
Romans 4:23 
Now it was not written for his sake alone, that it was imputed to him;

The Bible speaks of the imputed righteousness of Christ or the imputation of sin.  We receive the imputed righteousness of Christ alone in His unified merit of His active and passive obedience by faith alone.  The choice is a cosmic choice by God alone; that is, He decides who receives His imputed merit or who receives imputed sin.  The post-converted elect have His imputed righteousness while unbelievers do not.