The Holy Spirit will take the scripture and use it to produce regeneration within the sinner whom God has chosen to get saved by the message of the Cross, as that message is preached and taught in both Calvinistic and non cal churches, and once the sinner is saved, then they are to be searching the scriptures to see what the lord states on this issue.

Both a calvinist and a non cal pastor would preah off the same message regrading salvation, and while the calvinist one has a better understanding on how God saves us, do you really see that none are able to get saved apart from Calvinism then?