Maybe it would help you understand if you had the correct meaning of Perseverance.
It does not mean I persevere it means God perseveres......it is He who keeps that which entrusted to Him (eternal security)
....for I know whom I have believed, and I am convinced that He is able to protect what I have entrusted to Him until that day
2Tim 1:12
I know the TULIP is misinterpreted by many, I see these new definitions in the forums. I think maybe the acronym TULIP causes more misunderstanding than it helps others to know our doctrines.
I suggest if you want the correct definitions you can go to the Reformed websights for correct definitions. You may not agree but at least you will have the right information. I doubt if anyone would disagree with the 5 Solas.
I'm not even sure how these doctrines of grace became known as 'calvinism' except that it is widely accepted. I'm not sure what Wycliffe, Tyndale and Zwingli called themselves........Reformers I guess, since they were of that group.
Calvinists and Baptists are not so very far apart on our basic beliefs that Reformed theology should brings out such hatred for fellow heirs. "Calvinism" is not the reason for lack of growth, the real reason is lack of interest of pew sitters. They walk an aisle, join a church, "listen" to a sermon and know at least 3 verses of scripture.....John 3:16 for sure.
If you want to know our statement of faith read the Westminster Confession.
It is insulting to have people outside of calvinism telling me what I believe......and usually at least 75% wrong. sometimes 100%
Like wise no calvinist should label someone an arminian. Not all non-cals are of that theology which says you can lose your salvation. Methodists and other laws keeping groups have that sad theology.
The more correct word for folks with a more baptist background would be Amyraldian, a term from Moses Amyrald who defined a statement of faith for groups in that view.
You cannot vanquish a Calvinist
You may think you can, but you cannot. The stones of the great doctrines so fit into each other that the more pressure there is applied to remove them, the more strenuously do they adhere. (Spurgeon)