Theodore Beza: Christ's righteousness and perfection is imputed to us freely when we rest in Him and receive Him by faith

Truly, all that is in Jesus Christ, that is to say, all the righteousness and perfection (in Him there was no sin and moreover He has fulfilled all the righteousness of the Law), is placed to our account and gifted to us as if it were our own, provided that we embrace Him by faith.

-Theodore Beza, “Faith and Justification”