I think it would be appropriate to have the person define some terms and at least defend his comments biblically. Is this person under the impression that OT folks were a different sort of sinner? The necessity of regeneration is dependent upon the fact that men are spiritually blind, alienated from God, and with their heart oriented toward the Lord. As far as scripture is concerned, this is something that has always been apart of humanity since Adam's fall. So, that begs the question: what exactly does this person mean when he says he does not believe OT saints were regenerated in the same way? Is he saying there are two types of regeneration?

Fred

"Ah, sitting - the great leveler of men. From the mightest of pharaohs to the lowest of peasants, who doesn't enjoy a good sit?" M. Burns