Could you post some verses please?You can abandon believing...UNLESS you have Become Converted...according to Gods WAY....which IS Specifically BY the mans Exercising His FREEWILL Of confessing True HEARTFUL Belief.
Once a man by his own freewill confesses his True Heartful Belief....
By Gods Works that mans BODY becomes Spiritually dead...crucified with Christ!
His spirit becomes Born Again via Gods Seed....
Clearly Scripture teaches this is a permanent ACT of the man....clearly Scripture teaches To BE Sure of your choice. Your yes is yes, your no is no.
There is no “changing your mind”
The decision For a yes Confession WAS never by a Confession OF your Mind....Gods WAY of Confession is precisely of a man Hearts Thoughts.
Immediately After a man MAKES a Heartful Confession...
The man becomes Bodily dead, man given a new heart, man given Gods Seed, Gods Seed Births man a new spirit....and you think man can UNDO those Works of God?
Nothing in Scripture teaches such a thing.
Perhaps God can UNDO those things?
Impossible...because that would MAKE God a liar.
Where does scripture state it is a permanent act?
I do agree that we believe with the heart....
but we can also come to disbelieve...for instance when tribulation comes along,
Jesus stated belief can be lost in Luke 8:13.
Jesus stated this again in Luke 15:24
I tend to pay attention when Jesus talks.
BTW, let your yes be yes and your no be no has nothing to do with the topic of salvation.