The heart is the function of your overall "thinking process."
How your mind reasons and believes is revealed in your heart.
You want to go on with that?
You really don't get it?
Sure, I'll go with that – watdaya think - that I'm actually intimated by your spiritual prowess? Really? You usually get most things
wrong probably because you build upon an incorrect foundation. And no, the heart isn't the function of your overall thinking. Spiritually speaking, how your mind reasons and believes is not manifested in the heart, it is the reverse: what is in the heart reveals and manifests in reasoning and belief: sin unto sin or faith unto faith.
The mind of the natural man (unsaved man) cannot reason its heart into salvation. The spiritually dead are incapable of correctly comprehending the things of the Spirit.
[1Co 2:12-14 KJV]
12 Now we have received, not the spirit of the world,
but the spirit which is of God; that we might know the things that are freely given to us of God.
13 Which things also we speak,
not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.
All spiritual deceit originates in the heart. This verse does not say the mind causes the heart to be deceitful - rather the heart is desperately wicked and deceitful above
ALL things, which manifests into the mind.
[Jer 17:9 KJV]
9
The heart [is] deceitful above
all [things], and desperately wicked: who can know it?
A man's heart (not his mind), is that which deviseth his ways
[Pro 16:9 KJV]
9
A man's heart deviseth his way: but the LORD directeth his steps.
Deceit is in the heart of the man who imagines evil - from a deceitful heart comes the evil of the mind.
[Pro 12:20 KJV]
20
Deceit [is] in the heart of them that imagine evil: but to the counsellors of peace [is] joy.
I’m not going through rest of them to explain them to you, but you should be able to get the idea.
[Pro 16:1 KJV]
1 The
preparations of the heart in man, and the answer of the tongue, [is]
from the LORD.
[Mat 12:35 KJV]
35
A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
[Pro 11:20 KJV]
20
They that are of a froward heart [are] abomination to the LORD: but [such as are] upright in [their] way [are] his delight.
[Psa 58:2 KJV]
2 Yea,
in heart ye work wickedness; ye weigh the violence of your hands in the earth.
[Mat 5:8 KJV] 8
Blessed [are] the pure in heart: for they shall see God.
[Act 7:51 KJV] 51 Ye stiffnecked and
uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers [did], so [do] ye.
[Rom 2:29 KJV]
29 But he [is] a Jew, which is
one inwardly;
and circumcision [is that] of the heart, in the spirit, [and] not in the letter; whose praise [is] not of men, but of God.
[1Co 14:25 KJV]
25 And thus
are the secrets of his heart made manifest; and so falling down on [his] face he will worship God, and report that God is in you of a truth.
[Eph 4:18 KJV]
18 Having the understanding darkened, being alienated from the life of God
through the ignorance that is in them,
because of the blindness of their heart: