Page 499 … A multitude of sins
You then quote James 5:20 as saying: “Let him know, that he who converts the sinner from the error of his way shall save a Soul from death, and shall hide a multitude of sins.”
Firstly, Jesus is the one who lets us know how we are to “convert a sinner from the error of his ways” – namely, with open acts of unconditional forgiveness &/or radical, non-judgmental acts of unconditional Kindness; primarily accomplished while keeping our mouths shut from start to finish …
Secondly, if we are truly to “believe the whole Bible” (as you & yours claim to do) then we must assume that James does not contradict himself … And if James does not contradict himself, then we must also posit that he – like Jesus – also wants us to “convert sinners” with silent acts of humble, non-judgmental Love … Please consider the words of James:
“God opposes the proud, but gives grace to the humble … Do not speak evil against one another, brothers & sisters. Whoever speak evil against another or judges another, speaks evil against the law and judges the law … There is one lawgiver and one judge who is able to save and destroy. As such, who are you to judge your neighbor?” ~ James 4:6-12