Jeremiah 17:9-10

Amplified Bible

⁹ 
“The heart is deceitful above all things
And it is ^[a]extremely sick;
Who can understand it fully and know its secret motives?^(A)
10 
“I, the Lord, search and examine the mind,
I test the heart,
To give to each man according to his ways,
According to the results of his deeds.