Robert Durocher, a Latter-day Saint from California, made me aware of the following article by Dan Corner, author of The Believer’s Conditional Security: Eternal Security Refuted:
The topic of the "imputation" of the righteousness of Christ has been discussed many times on this blog, including my 7-part series, Λογιζομαι in texts contemporary with the New Testament:
Corner discusses Rom 4:5-8, which I have discussed, too:
King David Refutes Reformed Soteriology (cf. Robert Sungenis, Discussion with Dr. R. Scott Clark of Westminster Theological Seminary and other Protestants on David’s Justification in Romans 4:5-8)
This passage is one of the strongest passages that disprove Reformed theology.