New Living Translation
“The human heart is the most deceitful of all things, and desperately wicked. Who really knows how bad it is?

American Standard Version
The heart is deceitful above all things, and it is exceedingly corrupt: who can know it?

Berean Study Bible
The heart is deceitful above all things and beyond cure. Who can understand it?

Douay-Rheims Bible
The heart is perverse above all things, and unsearchable, who can know it?

English Revised Version
The heart is deceitful above all things, and it is desperately sick: who can know it?

King James Bible
The heart is deceitful above all things, and desperately wicked: who can know it?

World English Bible
The heart is deceitful above all things, and it is exceedingly corrupt: who can know it?

Young's Literal Translation
Crooked is the heart above all things, And it is incurable -- who doth know it?

Jeremiah 17:9 Additional Translations ...