Jeremiah 17:9-10

Amplified Bible, Classic Edition

⁹ The heart is deceitful above all things, and it is exceedingly perverse and corrupt and severely, mortally sick! Who can know it [perceive, understand, be acquainted with his own heart and mind]?^(A)

¹⁰ I the Lord search the mind, I try the heart, even to give to every man according to his ways, according to the fruit of his doings.