King James Version (KJV)
The heart {is} deceitful above all {things}, and desperately wicked: who can know it?
Modern English
The heart is deceitful above all things and it is exceedingly corrupt. Who can know it?
Hebrew
עָקֹ֥ב הַלֵּ֛ב מִכֹּ֖ל וְאָנֻ֣שׁ ה֑וּא מִ֖י יֵדָעֶֽנּוּ׃
ʿaqob haleb mikol vʾanush hvʾ miy yedaʿenv