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.

2 Chronicles 26:9
Moreover Uzziah built towers in Jerusalem at the corner gate, and at the valley gate, and at the turning of the wall, and fortified them.
2 Chronicles 26:15
And he made in Jerusalem engines, invented by cunning men, to be on the towers and upon the bulwarks, to shoot arrows and great stones withal. And his name spread far abroad; for he was marvellously helped, till he was strong.
2 Chronicles 27:5
He fought also with the king of the Ammonites, and prevailed against them. And the children of Ammon gave him the same year an hundred talents of silver, and ten thousand measures of wheat, and ten thousand of barley. So much did the children of Ammon pay unto him, both the second year, and the third.
2 Chronicles 27:6
So Jotham became mighty, because he prepared his ways before the LORD his God.
2 Chronicles 28:15
And the men which were expressed by name rose up, and took the captives, and with the spoil clothed all that were naked among them, and arrayed them, and shod them, and gave them to eat and to drink, and anointed them, and carried all the feeble of them upon asses, and brought them to Jericho, the city of palm trees, to their brethren: then they returned to Samaria.
2 Chronicles 28:20
And Tilgathpilneser king of Assyria came unto him, and distressed him, but strengthened him not.
2 Chronicles 29:3
He in the first year of his reign, in the first month, opened the doors of the house of the LORD, and repaired them.
2 Chronicles 29:34
But the priests were too few, so that they could not flay all the burnt offerings: wherefore their brethren the Levites did help them, till the work was ended, and until the other priests had sanctified themselves: for the Levites were more upright in heart to sanctify themselves than the priests.
2 Chronicles 31:4
Moreover he commanded the people that dwelt in Jerusalem to give the portion of the priests and the Levites, that they might be encouraged in the law of the LORD.
2 Chronicles 32:5
Also he strengthened himself, and built up all the wall that was broken, and raised it up to the towers, and another wall without, and repaired Millo in the city of David, and made darts and shields in abundance.