Refiner Word Study koinoo (G2840)
G2840  ·  Greek  ·  Strong's Concordance
κοινόω
koinoo
12 occurrences in Scripture Greek

"to make common, in NT to profane, desecrate, Acts 21:28; to render ceremonially unclean, defile, pollute, Mt. 15:11, 18, 20; 7:15, 18, 20, 23; Heb. 9:13; to pronounce unclean ceremonially, Acts 10:15; 11:9*"

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Definition and meaning

What does koinoo mean in Greek?

12
Occurrences in Scripture
G2840
Strong's number
Greek
Original language

to make common, in NT to profane, desecrate, Acts 21:28; to render ceremonially unclean, defile, pollute, Mt. 15:11, 18, 20; 7:15, 18, 20, 23; Heb. 9:13; to pronounce unclean ceremonially, Acts 10:15; 11:9*

In the original Greek the word is written: κοινόω

Historical context

What was happening when this word was written?

Roman-Occupied Judea (c. 4 BC-AD 30)

Rome had controlled Judea since 63 BC. Herod the Great rebuilt the Temple into one of the most magnificent structures in the ancient world — and simultaneously murdered members of his own family. The common people paid multiple layers of taxation and were politically powerless. Into that world a carpenter from Galilee began teaching that the kingdom of God had arrived.

The people who first heard this word were not reading a book — they were living through empires, oppression, exile, and covenant. Every word carried the weight of that reality. Understanding it changes how you read Scripture.

Scripture references

Top 10 Bible verses with koinoo

These are the most notable occurrences of koinoo (G2840) across the King James Bible.

Matthew 15:11

Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.

Matthew 15:18

But those things which proceed out of the mouth come forth from the heart; and they defile the man.

Matthew 15:20

These are the things which defile a man: but to eat with unwashen hands defileth not a man.

Mark 7:15

There is nothing from without a man, that entering into him can defile him: but the things which come out of him, those are they that defile the man.

Mark 7:18

And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, it cannot defile him;

Mark 7:20

And he said, That which cometh out of the man, that defileth the man.

Mark 7:23

All these evil things come from within, and defile the man.

Acts 10:15

And the voice spake unto him again the second time, What God hath cleansed, that call not thou common.

Acts 11:9

But the voice answered me again from heaven, What God hath cleansed, that call not thou common.

Acts 21:28

Crying out, Men of Israel, help: This is the man, that teacheth all men every where against the people, and the law, and this place: and further brought Greeks also into the temple, and hath polluted this holy place.

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Common questions

Frequently asked questions about koinoo

What does koinoo mean in Greek?

Strong's G2840 (koinoo) is a Greek word that means: to make common, in NT to profane, desecrate, Acts 21:28; to render ceremonially unclean, defile, pollute, Mt. 15:11, 18, 20; 7:15, 18, 20, 23; Heb. 9:13; to pronounce unclean ceremonially, Acts 10:15;... It appears 12 times in the King James Bible.

How many times does koinoo appear in the Bible?

The word koinoo (G2840) appears 12 times in the original Greek text.

What is Strong's number G2840?

Strong's G2840 is koinoo, a Greek word defined as: to make common, in NT to profane, desecrate, Acts 21:28; to render ceremonially unclean, defile, pollute, Mt. 15:11, 18, 20; 7:15, 18, 20, 23; Heb. 9:. James Strong catalogued this in his 1890 concordance to help English readers study the original languages of the Bible.

Is koinoo in the Old Testament or New Testament?

koinoo is a Greek word found in the New Testament.