[metmom]

Catholics object to those Protestants who believe that since they are "saved," they can sin with impunity. I realize that this is a small percentage of Protestants, but they do exist.

No different from Catholics who sin with impunity and figure they'll just be putting in a little extra time in purgatory.

So if you recognize that it is a small percentage, why do Catholics keep harping on it?

Especially when virtually every non-Catholic here says that if someone has that attitude, they are more likely than not, not a Christian.

[St_Thomas_Aquinas]

No different from Catholics who sin with impunity and figure they'll just be putting in a little extra time in purgatory.

Individual Catholics may adopt this attitude, but these individuals are jeopardizing their salvation, and this attitude is condemned by the Church.

So if you recognize that it is a small percentage, why do Catholics keep harping on it?

We don't see fellow Protestants condemning this attitude. Far more often we observe Protestants condemning Catholic teaching regarding salvation.

Also, under the rubric of Sola Scriptura, what earthly power can claim authority to condemn the "once saved, always saved" interpretation of Scripture?

Especially when virtually every non-Catholic here says that if someone has that attitude, they are more likely than not, not a Christian.

That hasn't been my experience.