I think if you spent more time actually reading Scripture rather than interrogating it, you'd understand more fully. To question those "assurance verses" is to question the work of the Holy Spirit within you.
"A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh." -- Ezekiel 36:26
If a man is compelled to read the Bible and obey God, it is because he is no longer living for himself. Christ lives within him.
"But if ye be led of the Spirit, ye are not under the law." -- Galatians 5:18"And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father." -- Galatians 4:6
To question the assurance of our salvation, as given us in Scripture by God, is to deny Christ on the cross. Did He die for your sins? Did He rise from the dead? Is it all true?
"For by one offering he hath perfected for ever them that are sanctified." -- Hebrews 10:14
How do we know we are sanctified? We look around and observe the fruits of our lives.
(For the fruit of the spirit is in all goodness and righteousness and truth;) Proving what is acceptable unto the Lord." -- Ephesians 5:8-10"For ye were sometimes darkness, but now are ye light in the Lord: walk as children of light:
"Proving" His grace; not earning it.
That's called "begging the question".
Regarding the "bearing of fruit", apostates-to-be also bear faux-fruit. So how do you know that your fruit is *true* fruit, and not faux-fruit?
-A8