be strong, strengthen
At its core, chazaq means to be strong or to become strong, but that English gloss barely scratches the surface. The word carries a physical, muscular weight. It describes the grip of a hand that will not let go, the fortification of a city wall, the hardening of a heart that refuses to bend. When chazaq appears as a verb, it can move in two directions at once: something is strengthened from the outside, or something seizes with force from within.
The Hebrew authors used chazaq to describe a surgeon's kind of courage, the courage you need when you must hold someone up who is falling. Moses tells Joshua to 'be strong' (chazaq) before crossing the Jordan. The word is not a pep talk. It is a transfer of load-bearing responsibility. The same word describes Pharaoh's heart growing hard against God. The same grip that holds a brother steady can clench into refusal.
Chazaq also carries the sense of repair and restoration. When the temple falls into disrepair in 2 Kings, the workers are sent to 'strengthen' it, to rebuild what had crumbled. So the word holds together three images at once: the grip of a hand, the hardening of a will, and the restoration of something broken. Biblical strength, in the Hebrew imagination, is never just an internal feeling. It always shows up in your hands, in your posture, in what you hold and what you rebuild.
Most of us read 'be strong and courageous' and hear a motivational poster. I did for years. I thought Joshua was being sent off with enthusiasm, like a coach slapping a helmet before the big game. But chazaq is not enthusiasm. It is the word you use when the weight is real and the person receiving it knows the weight is real. God is not cheerleading Joshua. He is handing him something heavy and saying, do not drop it. That reframe matters for every season where you feel the gap between what God is asking and what you feel capable of delivering. Chazaq names that gap honestly. Then it tells you to grip anyway.
Chazaq (חָזַק) comes from a root signaling firmness and grip. Its noun form chozek (חֹזֶק) means strength or force. The related noun chazaqah (חֲזָקָה) appears in legal contexts to describe a claim of possession, literally a holding onto something. The adjectival form chazaq describes anything firm, whether a strong wind, a mighty army, or a stubborn refusal. The semantic family circles around the idea of a grip that does not yield.
Where chazaq appears in Scripture, and why each verse showcases it.
Have I not commanded you? Be strong and courageous. Do not be frightened, and do not be dismayed, for the LORD your God is with you wherever you go.
Chazaq appears here as a command, not an encouragement. God is issuing an order to grip what He has given, and the basis for obedience is His presence, not Joshua's readiness.
And the LORD said to Moses, 'When you go back to Egypt, see that you do before Pharaoh all the miracles that I have put in your power. But I will harden his heart, so that he will not let the people go.'
Here chazaq describes God hardening Pharaoh's heart, the same word for strength now describing a will clenched in refusal. The word's range forces you to reckon with how strength can calcify into defiance.
let the priests take, each from his donor, and let them repair the house wherever any need of repair is found.
The word translated 'repair' is chazaq. Strengthening the temple means rebuilding its broken places. Biblical strength, in this verse, looks like hands on stone, not feelings in a chest.
Strengthen the weak hands, and make firm the feeble knees.
Chazaq is the verb behind 'strengthen' here. The prophet's vision of restoration is physical and communal. You strengthen someone else's hands. Chazaq is something you do for another person.
Be strong and courageous. Do not fear or be in dread of them, for it is the LORD your God who goes with you. He will not leave you or forsake you.
Moses speaks chazaq to an entire nation about to enter without him. The command is corporate here. Israel as a body is told to grip what God has promised, together.
Words in the same semantic family.
Every video where Adam teaches on this word, in publication order.
This word is studied in depth in the following monthly Bible studies.
