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.

Jeremiah 50:42
They shall hold the bow and the lance: they are cruel, and will not shew mercy: their voice shall roar like the sea, and they shall ride upon horses, every one put in array, like a man to the battle, against thee, O daughter of Babylon.
Jeremiah 50:43
The king of Babylon hath heard the report of them, and his hands waxed feeble: anguish took hold of him, and pangs as of a woman in travail.
Jeremiah 51:12
Set up the standard upon the walls of Babylon, make the watch strong, set up the watchmen, prepare the ambushes: for the LORD hath both devised and done that which he spake against the inhabitants of Babylon.
Jeremiah 52:6
And in the fourth month, in the ninth day of the month, the famine was sore in the city, so that there was no bread for the people of the land.
Ezekiel 3:14
So the spirit lifted me up, and took me away, and I went in bitterness, in the heat of my spirit; but the hand of the LORD was strong upon me.
Ezekiel 7:13
For the seller shall not return to that which is sold, although they were yet alive: for the vision is touching the whole multitude thereof, which shall not return; neither shall any strengthen himself in the iniquity of his life.
Ezekiel 13:22
Because with lies ye have made the heart of the righteous sad, whom I have not made sad; and strengthened the hands of the wicked, that he should not return from his wicked way, by promising him life:
Ezekiel 16:49
Behold, this was the iniquity of thy sister Sodom, pride, fulness of bread, and abundance of idleness was in her and in her daughters, neither did she strengthen the hand of the poor and needy.
Ezekiel 22:14
Can thine heart endure, or can thine hands be strong, in the days that I shall deal with thee? I the LORD have spoken it, and will do it.
Ezekiel 27:9
The ancients of Gebal and the wise men thereof were in thee thy calkers: all the ships of the sea with their mariners were in thee to occupy thy merchandise.