ἰσχύω
to have (or exercise) force (literally or figuratively)
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to have (or exercise) force (literally or figuratively)
ἰσχύω(ischýō)
Strong’s Definition
to have (or exercise) force (literally or figuratively)
from G2479 (ἰσχύς);
“Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.”
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When the Soul Learns Its Own Strength
Thirty-six times the Holy Spirit breathes this verb through the apostolic writings — ischýō, meaning to have force, to prevail, to be thoroughly able. It appears first in the Gospel of Matthew, where a woman who had suffered twelve years of bleeding reaches through a crowd and touches the tzitzit of Yeshua's garment. The text says she "came up behind him and touched the fringe of his garment," and the Master turned and said, "Take heart, daughter; your faith has made you whole" (Matthew 9:20-22). That word "made whole" is ischýō in its deepest sense — not merely healed, but restored to the fullness of your created strength. The woman who could not prevail against her own brokenness found that another's strength had become hers.
The Grammar of Divine Enablement
In classical Greek, ischýō carried the sense of physical might — the warrior's arm, the ox's pulling power. But the New Testament writers, steeped in the language of the Septuagint, transformed this verb into a vessel for something far greater. When the apostle Paul writes, "I can do all things through him who strengthens me" (Philippians 4:13), the verb he uses for "can do" is ischýō in the present active indicative — a continuous, ongoing reality. This is not the aorist of a single act but the present tense of a life being lived in constant connection to the Source of all force. The early church understood this grammatical shift as nothing less than a new creation: where human strength had always been measured by what it could accomplish alone, now strength was redefined as what the Messiah could accomplish through yielded vessels.
The rabbis of old observed that the Hebrew concept of koach (strength) appears most powerfully not in warriors but in those who wait upon the Lord. When the Septuagint translators rendered the Hebrew chazaq (to be strong) as ischýō in passages like Joshua 1:6-7, they were declaring that the force which conquers Canaan is not military might but the presence of the living God. The apostolic tradition teaches that this same force now dwells in every believer through the Ruach HaKodesh.
The Verb That Refuses to Let Go
The most striking use of ischýō in the Gospels appears in the story of the Gerasene demoniac. Mark tells us that no one could bind him, not even with chains — "no one had the strength to subdue him" (Mark 5:4). Here the verb appears in the imperfect tense with a negative: oudeis ischyen, "no one was strong enough." This man, possessed by a legion of unclean spirits, had become a living parable of human helplessness. Yet when Yeshua speaks one word, the demons flee. What human strength could not accomplish — not chains, not isolation, not the collective force of an entire village — the Word of God accomplished in a single moment.
This is the theological weight of ischýō: it reveals that all human strength is borrowed strength. The apostle Paul, writing to the Corinthians, uses the verb in a context that would have stunned any Greek philosopher: "For the foolishness of God is wiser than men, and the weakness of God is stronger [ischyroteron] than men" (1 Corinthians 1:25). The early church fathers observed that here Paul does not say God is strong in the way humans understand strength. Rather, God's apparent weakness — the cross, the suffering servant — possesses a force that shatters every human category of power.
The Faith That Prevails
No New Testament writer uses ischýō with more theological precision than the apostle John. In his first epistle, he writes: "For everyone who has been born of God overcomes the world. And this is the victory that has overcome the world — our faith" (1 John 5:4). The verb for "overcomes" is nikaō, but the context demands ischýō as its foundation — faith is the force that makes overcoming possible. John understands that the world, with its systems of power and its prince of darkness, exerts tremendous pressure against the soul. Yet the one who is born of God possesses a strength that the world cannot match, because it comes from the one who has already overcome the world.
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The fathers of the faith noted that this is not the Stoic ideal of self-sufficiency, where the wise man cultivates inner strength through discipline. No — the Christian ischýō is entirely derivative. It flows from the Vine into the branches. The apostle Paul, who knew more about human weakness than perhaps any other writer, learned to boast in his infirmities precisely because Christ's power was made perfect in weakness (2 Corinthians 12:9). The Greek philosophical category of aretē (excellence) was thus transformed: the highest excellence was no longer the cultivation of personal virtue but the complete surrender to divine enablement.
The Septuagint Bridge
When the translators of the Septuagint chose ischýō to render Hebrew verbs of strength, they built a bridge between two worlds. The Hebrew chazaq appears in the great command: "Be strong and courageous" (Joshua 1:6). The Greek translators rendered this as ischye kai andreou — be strong and act like a man. But the Hebrew chazaq carries a deeper resonance: it means to be fastened, to be secured, to hold fast. The strength commanded by God is not a self-generated force but the security of being held by the covenant-keeping God.
Similarly, the Hebrew yakol (to be able, to prevail) is often translated by ischýō in the Septuagint. When Joseph's brothers could not answer him because they were terrified (Genesis 45:3), the Greek says ouk ischyson — they had no strength to speak. This same verb appears in the New Testament when the disciples could not cast out a demon (Matthew 17:16), and Yeshua explains that such force requires prayer and fasting. The rabbis of old taught that the strength to speak truth in the presence of authority comes only from the Holy One; the Septuagint and the New Testament together testify that this strength is given through the Messiah.
The Messiah Who Is the Strength
The most profound messianic use of ischýō appears in the Gospel of Luke, where the angel Gabriel tells Miriam: "The Holy Spirit will come upon you, and the power of the Most High will overshadow you" (Luke 1:35). The word for "power" here is dynamis, but the force that enables the impossible — a virgin conceiving the Son of God — is described in terms that echo ischýō. The early church understood that in this moment, human and divine strength met in a way that changed history forever. Yeshua, the one who would later say "All authority in heaven and on earth has been given to me" (Matthew 28:18), entered the world not through an act of human strength but through the overshadowing of divine presence.
The apostolic tradition teaches that this same force is available to every believer. When Paul prays that the Ephesians would be "strengthened with power through his Spirit in your inner being" (Ephesians 3:16), the verb for "strengthened" is krataioō, but it flows from the same source as ischýō. The Messiah who prevailed over death, who had the strength to lay down his life and the power to take it up again, now imparts that same resurrection force to those who are united with him. The fathers of the faith observed that this is why the martyrs could endure what no human strength could bear: they had been strengthened by the one who is himself the Strength of Israel.
Your Call to This Force
You have been given a strength that the world cannot manufacture and the enemy cannot overcome. It is not your own — and that is precisely why it is unshakeable. The same ischýō that raised Yeshua from the dead now pulses through your spirit, making you able to endure what would crush you, to prevail where you would fail, to stand when every chain of circumstance says you should fall. Do not measure your strength by what you can produce from within yourself. Measure it by the one who dwells within you. Go now, and let that force accomplish through you what only heaven can do.