Strong's numbers

חָזַק (H2388)

châzaq

khaw-zak'

a primitive root; to fasten upon; hence, to seize, be strong (figuratively, courageous, causatively strengthen, cure, help, repair, fortify), obstinate; to bind, restrain, conquer; aid, amend, [idiom] calker, catch, cleave, confirm, be constant, constrain, continue, be of good (take) courage(-ous, -ly), encourage (self), be established, fasten, force, fortify, make hard, harden, help, (lay) hold (fast), lean, maintain, play the man, mend, become (wax) mighty, prevail, be recovered, repair, retain, seize, be (wax) sore, strengthen (self), be stout, be (make, shew, wax) strong(-er), be sure, take (hold), be urgent, behave self valiantly, withstand.

Brown–Driver–Briggs

חָזַק 291 vb. be or grow firm, strong, strengthen

Qal

I intrans. be or grow strong

II transit. only strengthened him not

Pi.

1 make strong (physically)

2 strengthen the hands (acc.) of anyone, sustain, encourage

3 make strong = bold, encourage

4 make firm

5 make rigid, hard, i.e. perverse, obstinate, harden

Hiph.

a make strong, strengthen

b make firm, the kingdom

c display strength

2 make severe, of battle

3 support

4 = repair

5 prevail

6 esp. take or keep hold of, seize, grasp

Hithp.

1 strengthen oneself

2 put forth strength, use one's strength

3 withstand

4 hold strongly with

From Brown, Driver, and Briggs, A Hebrew and English Lexicon of the Old Testament (1906), in the public domain.

266 occurrences

Shown in the King James Version (KJV), whichever translation you read in — it is the text these numbers are tagged against.

Psalms 27:14
Wait on the LORD: be of good courage, and he shall strengthen thine heart: wait, I say, on the LORD.
Psalms 31:24
Be of good courage, and he shall strengthen your heart, all ye that hope in the LORD.
Psalms 35:2
Take hold of shield and buckler, and stand up for mine help.
Psalms 64:5
They encourage themselves in an evil matter: they commune of laying snares privily; they say, Who shall see them?
Psalms 147:13
For he hath strengthened the bars of thy gates; he hath blessed thy children within thee.
Proverbs 3:18
She is a tree of life to them that lay hold upon her: and happy is every one that retaineth her.
Proverbs 4:13
Take fast hold of instruction; let her not go: keep her; for she is thy life.
Proverbs 7:13
So she caught him, and kissed him, and with an impudent face said unto him,
Proverbs 26:17
He that passeth by, and meddleth with strife belonging not to him, is like one that taketh a dog by the ears.
Isaiah 4:1
And in that day seven women shall take hold of one man, saying, We will eat our own bread, and wear our own apparel: only let us be called by thy name, to take away our reproach.