Quote
The Call that Brings a Response by Paul Helm Hence, in the conversion of a person through the proclamation of the Christian good news, there is a two-fold call. There is the general call of the gospel through preaching and there is the particular, effective call of God working a change in a person’s inner character to make him appreciative of the gospel and responsive to it.

I think he is simply talking about God taking out the heart of stone and replacing it with a heart of flesh. I don't see where he speaks of justification anywhere in this quote. As Romans 8:30 tells us, calling and justification is different.

True godliness is a sincere feeling which loves God as Father as much as it fears and reverences Him as Lord, embraces His righteousness, and dreads offending Him worse than death~ Calvin