3 occurrences in 12 translations

'Harden' in the Bible

and charge Jehoshua, and strengthen him, and harden him, for he doth pass over before this people, and he doth cause them to inherit the land which thou seest.

and ye have circumcised the foreskin of your heart, and your neck ye do not harden any more;

If there be among you a poor man of one of thy brethren within any of thy gates in thy land which the LORD thy God giveth thee, thou shalt not harden thine heart, nor shut thine hand from thy poor brother:

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Strong's
Root Form
Definition
Usage
חזק 
Chazaq 
Usage: 290

כּבד כּבד 
Kabad 
Usage: 114

כּבד 
Kabed 
Usage: 40

סלד 
Calad 
Usage: 1

עזז 
`azaz 
Usage: 12

קשׁה 
Qashah 
Usage: 28

קשׁח 
Qashach 
Usage: 2

תּקף 
T@qeph (Aramaic) 
Usage: 5

πωρόω 
Poroo 
Usage: 4

σκληρύνω 
Skleruno 
Usage: 6

King James Version Public Domain