Roger that. It’s an imputed righteousness that we have. God imputes Christ’s righteousness to us, and treats the elect as if we were as perfect as He was/is. Just as He imputed our sins to Christ, and on the cross treated Him as if He was as imperfect as we are.
Grace is unmerited favor.
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph 2:9 Not of works, lest any man should boast.
Like the Holy Spirit directed the Apostle Paul to say above, (paraphrasing) “For by unmerited favor are you saved through faith; and (that faith) absolutely does not originate in yourselves: it is the gift of God. Absolutely not originating in works, lest any should boast.”
If the Apostle Paul was so far out on the limb regarding grace that his opponents thought they could make the charge that he was advocating “sin lots so you get lots of grace” stick, then Paul was telling them some radical things about grace. He was telling them that sin in believers could be forgiven because there was “grace to help every time of need” heb 4:16
I can see someone twisting that to ‘sin lots so you get lots of grace.’
Grace Abounds!