Okay, the first Scripture is Jer. 17:9a, "The heart is deceitful above all things and beyond cure."
In order to understand Scripture correctly, one must consider both the immediate context
and NT teaching.
The immediate context includes:
Jer. 17:5, "Cursed is the one who trusts in man... and whose heart turns away from the Lord."
Jer. 17:7, "But blessed is the man who trusts in the Lord, whose confidence is in Him."
Jer. 17:10, "I, the Lord, search the heart and examine the mind, to reward a man according to his conduct,
according to what his deeds deserve."
Jer. 12:1, 3, 14, 16, "You are always righteous, O Lord... you see me and test my thoughts about you...
This is what the Lord says... if the wicked learn well the ways of my people... then they will be established among my people."
Jer. 14:10, "This is what the Lord says about the people of Judah, They greatly love to wander...
so the Lord does not accept them; he will now ... punish them for their sins."
Jer. 18:8-11, "If that nation I warned repents of its evil, then I will relent and not inflict on it the disaster I had planned...
And if it does evil in my sight and does not obey me, then I will reconsider the good I had intended to do for it...
So turn from your evil ways, each one of you."
Is this sufficient, or do we need to cite relevant NT Scripture also?