I wonder if it is possible that "Calvinist" or a single Calvinist can clearly, with Scripture, make a case for Regeneration before salvation.
There are only two passages in the NT that use the word "regeneration". The one in Matthew deals with the resurrection. The one is Titus 3:5 does not define a process for or against anyone's position.
Who will step forward and list the clear teaching form Scripture.
Please do not quote dead and or living authors. Tell us from the Bible. Can you as an individual without the statements form others make a case from Scripture on your position concerning "regeneration".
The door is open for you to lay it our Scripturally.
Have at it.