By His stripes we are healed !
1 Pet 2:24
24 Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.
So because of His stripes [death], those He died for receive a New Heart for their healing, their being made whole. By nature, all men to include the elect have a heart that is incurably evil, sick Jer 17:9
9 The heart is deceitful above all things, and desperately wicked: who can know it?
The word desperately is the word 'anash and means:
to be weak, sick, frail
a) (Qal)
1) to be incurable
2) to be sick
3) desperate, incurable, desperately wicked, woeful, very sick (pass participle) (metaph.)
b) (Niphal) to be sick
The word incurable means:
not curable; that cannot be cured, remedied, or corrected: an incurable disease.
not susceptible to change human heart is incurablely wicked and evil, it cannot change.
There is another scripture that confirms this Truth Jer 13:23
Can the Ethiopian change his skin, or the leopard his spots? then may ye also do good, that are accustomed to do evil.
This is all humans by nature, we are accustomed to do evil. This word accustomed means taught, instructed in, trained in doing evil ! Thats because of the evil heart, and it can no more chane as can a leopard his spots, or an ethiopian his skin.
This is very important truth. Scripture here is very clear that the wicked heart cannot change. The word change in Jer 13:23 is the word haphak and means:
to turn, overthrow, overturn
a) (Qal)
1) to overturn, overthrow
2) to turn, turn about, turn over, turn around
3) to change, transform
b) (Niphal)
1) to turn oneself, turn, turn back
2) to change oneself
3) to be perverse
4) to be turned, be turned over, be changed, be turned against
5) to be reversed
6) to be overturned, be overthrown
7) to be upturned
It also means converted as in Isa 60:5
5 Then thou shalt see, and flow together, and thine heart shall fear, and be enlarged; because the abundance of the sea shall be converted unto thee, the forces of the Gentiles shall come unto thee.
This all tells us that the human heart cannot repent towards God and stop doing evil ! We cannot change.
But, the death of Christ, His stripes heals, and as an evidence, a New Heart in New Birth is given which enables us to live unto Righteousness experimentally and entails being born again or anew, it means we are made experimentally righteous in order to do righteous.
Now again, by nature the heart of the sons of men are fully set in them to do evil Gen 6:5
5 And God saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.
Ecclesiastes 8:11
Because sentence against an evil work is not executed speedily, therefore the heart of the sons of men are fully set in them to do evil.
Gen 8:21
21 And the Lord smelled a sweet savour; and the Lord said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart is evil from his youth; neither will I again smite any more every thing living, as I have done.
And so finally, before any man can do good [spiritually good and pleasing to God] he must be healed, made whole, cured by Christ's stripes, and that is what His stripes accomplished and effects for those whose sins He bare, it causes them to live unto Righteousness !