Are you saying that "righteous" and "doing righteousness" always denotes perfection? I agree that God's standard is perfection because sin must be dealt with- that's why we need Christ Jesus the Righteous, who died for our sins, rose for our justification, and ever lives to intercede on our behalf.

I thought Kevin DeYoung made very good points here:

http://thegospelcoalition.org/blogs/kevindeyoung/2011/05/31/obedience-is-possible/

My pastor also recently pointed this out in his first sermon on a series through Job

"There was a man in the land of Uz, whose name was Job; and that man was blameless and upright, and one who feared God and shunned evil." (1:1)

True godliness is a sincere feeling which loves God as Father as much as it fears and reverences Him as Lord, embraces His righteousness, and dreads offending Him worse than death~ Calvin