κακοποιέω
to be a bad-doer, i.e. (objectively) to injure, or (genitive) to sin
Everything you need to know.
of Completion
This certifies that
Is on track to complete the Bible for the 1st time in 240 days.
Paul's Handkerchief is Bible study with a difference — going word-by-word through Scripture to reclaim the Ancient Near East context, romance, and mystery that modern translations often leave behind.
Only about 3% of people around the world who start the Bible ever finish it. The 3% Club is for those ready to break that cycle — reading the entire Bible at their own pace, backed by community and tools built to make finishing not just possible, but inevitable. You also get a certificate to celebrate your achievement.
Bible Cafe isn't just Bible study — it's a personal, intimate conversation with Him. Think less classroom, more kitchen table. It combines the original Coffee with Jesus experience with activities like quizzes, crosswords, journaling and more, all designed to let the Word shape your heart, not just your head.
Most English Bibles can't carry the full weight of what's in the original Hebrew and Greek. The F.O.G Bible Project exists to change that — three new translations built publicly (a Study Bible, a Reader's Bible, and F.O.G Jr. for younger readers), plus a word-by-word renewal of Strong's Concordance restoring the depths most translations leave behind. It is Jean Paul's lifelong work, unfolding in public — and you're invited in.
Jean Paul Joseph is the lead editor of the F.O.G Bible Project. He works from a personal encounter with Jesus first, then draws on the scholarship of respected Jewish and Christian scholars — because the church was Jewish before it was anything else, and those roots change everything about how you read Scripture.
Simply create an account and choose your preferred Bible and reading style. The app will track your progress and help keep you accountable to the rhythm of daily Scripture engagement.
to be a bad-doer, i.e. (objectively) to injure, or (genitive) to sin
κακοποιέω(kakopoiéō)
Strong’s Definition
to be a bad-doer, i.e. (objectively) to injure, or (genitive) to sin
from G2555 (κακοποιός);
“And he saith unto them, Is it lawful to do good on the sabbath days, or to do evil? to save life, or to kill? But they held their peace.”
No verses found containing this word study ID.
The Wound That Walks Toward Redemption
Four times this verb appears in the sacred writings, yet each occurrence carries the weight of a world broken and being remade. Kakopoiéō — to do evil, to injure, to become a bad-doer — is not merely an action but a condition of the soul that has turned from its source. When you hear this word, you must hear the echo of Eden, where the first wound was inflicted not by a weapon but by a choice. The apostle Peter, writing to those scattered among the nations, uses this word with piercing precision: “Who is there to harm you if you become zealous for what is good? But even if you should suffer for righteousness’ sake, you are blessed. Have no fear of them, nor be troubled” (1 Peter 3:13-14). Here the verb appears in its passive form, suggesting that the one who does evil is not the righteous sufferer but the one who inflicts. Yet the deeper mystery is this: the one who commits kakopoiéō is also wounded, for evil never acts alone — it always consumes the hand that wields it.
The Grammar of a Broken Heart
Consider the tense of this verb in its first New Testament appearance. In Mark 3:4, Yeshua stands in the synagogue and asks the Pharisees, “Is it lawful on the Sabbath to do good or to do evil (kakopoiéō), to save life or to kill?” The present infinitive form here is crucial: it is not a single act but a continuous state, a way of being. The Greek grammatical structure reveals that doing evil is not merely a momentary lapse but a settled disposition. The sages of old taught that the heart is like a vessel — what you pour into it, it will hold. The present tense of kakopoiéō suggests a vessel that has been filled with bitterness and now overflows with injury. Yet Yeshua’s question cuts through the grammar to the heart: He places doing evil alongside killing, and doing good alongside saving life. There is no neutral ground in the Kingdom. Every action is either kakopoiéō or its opposite — the active embrace of life.
The Bridge of the Seventy
When the Septuagint translators rendered the Hebrew Scriptures into Greek, they faced a profound task: to carry the weight of covenant language across the waters of two worlds. The Hebrew verb ra‘ah (רָעָה) — to do evil, to be evil — found its Greek counterpart in kakopoiéō. You see this most clearly in the Psalms, where David cries out, “Depart from me, you evildoers (kakopoioi), for I will keep the commandments of my God” (Psalm 119:115 LXX). The Hebrew behind this is mere‘im, those who are actively bad. But the Septuagint deepens the sense: the evildoer is not merely someone who commits wrong acts but someone whose very existence is defined by the production of harm. This is the intertestamental bridge — a word that carries the moral urgency of the prophets into the Hellenistic world. When John the Baptist cried out in the wilderness, “Bear fruit worthy of repentance,” he was calling Israel to stop producing kakopoiéō and instead to become a vineyard that yields the sweet wine of righteousness.
The Apostle Who Knew Evil From Within
No New Testament writer uses this word with more personal anguish than the apostle Paul. In Romans 13:3-4, Paul writes of the governing authorities: “For rulers are not a terror to good conduct, but to bad (kakopoiéō). Would you have no fear of the one who is in authority? Then do what is good, and you will receive his approval.” Here Paul reflects the classical Greek understanding of law as a restraint on evil. But Paul knew something deeper — he had been a kakopoiós himself, breathing threats against the disciples of the Lord (Acts 9:1). The apostolic tradition teaches that Paul never forgot the face of Stephen, the first martyr, whose dying prayer was for those who did evil to him. This is the mystery of redemption: the one who once produced evil can become a vessel of grace. The early church understood that kakopoiéō is not an identity but a condition that can be remade by the power of the resurrection.
Send a Gift
This website is 100% donor-funded. Your generosity allows someone else to access this content for free.
Give a gift of $100 to sponsor a verse or page of your choice.
The Silent Witness of the Septuagint
In the book of Proverbs, the Septuagint uses kakopoiéō to translate a Hebrew verb that carries the sense of “to break down” or “to ruin.” Proverbs 13:17 in the Greek reads, “A wicked messenger falls into evil (kakopoiéō), but a faithful envoy brings healing.” The Hebrew behind this is shalah (שָׁלַח) — to send — combined with the idea of ruin. This is a profound insight: the one who does evil is like a messenger who has broken the message. He carries the king’s seal but delivers poison. The rabbis of old observed that every human being is a messenger — the question is whether you deliver life or death with your words, your hands, your very presence. When you commit kakopoiéō, you are not merely breaking a law; you are corrupting the message that God has entrusted to you.
The Messiah Who Refused to Return Evil
The most staggering use of this verb in the New Testament comes from the lips of Peter, writing to slaves who suffer unjustly: “For what credit is it if, when you sin and are beaten for it, you endure? But if when you do good and suffer for it you endure, this is a gracious thing in the sight of God. For to this you have been called, because Christ also suffered for you, leaving you an example, so that you might follow in his steps. He committed no sin, neither was deceit found in his mouth. When he was reviled, he did not revile in return; when he suffered, he did not threaten, but continued entrusting himself to him who judges justly” (1 Peter 2:20-23). Though the word kakopoiéō does not appear directly in this passage, it is the shadow against which Yeshua’s light shines. The Messiah refused to participate in the cycle of injury. He took the wound of all human evil into His own flesh and transformed it into the door of salvation. The early church fathers saw in this the fulfillment of Isaiah’s suffering servant — the one who “bore the sin of many” and “made intercession for the transgressors” (Isaiah 53:12). Yeshua did not merely avoid doing evil; He absorbed it and returned only blessing.
The Transformation of Action
In the first letter of Peter, the apostle gives the church its marching orders: “Do not repay evil for evil or reviling for reviling, but on the contrary, bless, for to this you were called, that you may obtain a blessing” (1 Peter 3:9). The verb kakopoiéō is the negative space around which this command is shaped. You are called to be a people who no longer produce evil, who no longer injure, who no longer sin. But this is not a command to mere passivity — it is an invitation to active goodness. The apostolic tradition teaches that the early church was known not by what they refused to do but by what they freely gave: hospitality to strangers, care for the sick, forgiveness to enemies. When you stop producing kakopoiéō, you do not become empty; you become a vessel for the living water of Messiah.
Your Hands, This Day
You stand at the crossroads of two verbs: kakopoiéō and agathopoiéō — to do evil and to do good. The sages teach that every moment is a judgment, every breath a choice. You cannot undo the evil you have done, but you can stop producing it. You can take the hand that once struck and use it to lift. You can take the tongue that once cursed and use it to bless. The Messiah has already walked the path of suffering for doing good; He has already absorbed the full force of human evil. Now He calls you to follow — not to be wounded, but to be a wound that heals. Let your doing this day be the fruit of His resurrection. Let your hands be His hands, producing only life. For the one who ceases to do evil and begins to do good has already entered the Kingdom, and that Kingdom is within you.