I’d agree it falls short of an adequate description of how salvation was worked. I don’t want to go out on a limb to the point of saying that individuals can’t put an efficacious personal salvation trust in Jesus Christ while not quite understanding how Jesus Christ worked it. But it certainly is unseemly for a whole church, like Camping’s, to be in such ignorance.
"I don’t want to go out on a limb to the point of saying that individuals can’t put an efficacious personal salvation trust in Jesus Christ while not quite understanding how Jesus Christ worked it."
You wouldn't be going out on a limb. God gave His Son to die for us. His death and resurrection takes away all our sins. And it is the Holy Spirit working within us, giving us the faith that works within us, that brings us to salvation. One cannot "put an efficacious personal salvation trust in Jesus Christ". It comes from the Holy Spirit, and we have to recognize and accept it. We cannot save ourselves. It's already been accomplished. Either we accept it and become believers in Christ, or we will die a sinner.