Refiner Word Study aionios (G166)
G166  ·  Greek  ·  Strong's Concordance
αἰώνιος
aionios
67 occurrences in Scripture Greek

"indeterminate as to duration, eternal, everlasting"

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Definition and meaning

What does aionios mean in Greek?

67
Occurrences in Scripture
G166
Strong's number
Greek
Original language

indeterminate as to duration, eternal, everlasting

In the original Greek the word is written: αἰώνιος

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 aionios

These are the most notable occurrences of aionios (G166) across the King James Bible.

Matthew 18:8

Wherefore if thy hand or thy foot offend thee, cut them off, and cast them from thee: it is better for thee to enter into life halt or maimed, rather than having two hands or two feet to be cast into everlasting fire.

Matthew 19:16

And, behold, one came and said unto him, Good Master, what good thing shall I do, that I may have eternal life?

Matthew 19:29

And every one that hath forsaken houses, or brethren, or sisters, or father, or mother, or wife, or children, or lands, for my name's sake, shall receive an hundredfold, and shall inherit everlasting life.

Matthew 25:41

Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:

Matthew 25:46

And these shall go away into everlasting punishment: but the righteous into life eternal.

Mark 3:29

But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation:

Mark 10:17

And when he was gone forth into the way, there came one running, and kneeled to him, and asked him, Good Master, what shall I do that I may inherit eternal life?

Mark 10:30

But he shall receive an hundredfold now in this time, houses, and brethren, and sisters, and mothers, and children, and lands, with persecutions; and in the world to come eternal life.

Luke 10:25

And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life?

Luke 16:9

And I say unto you, Make to yourselves friends of the mammon of unrighteousness; that, when ye fail, they may receive you into everlasting habitations.

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Common questions

Frequently asked questions about aionios

What does aionios mean in Greek?

Strong's G166 (aionios) is a Greek word that means: indeterminate as to duration, eternal, everlasting It appears 67 times in the King James Bible.

How many times does aionios appear in the Bible?

The word aionios (G166) appears 67 times in the original Greek text.

What is Strong's number G166?

Strong's G166 is aionios, a Greek word defined as: indeterminate as to duration, eternal, everlasting. James Strong catalogued this in his 1890 concordance to help English readers study the original languages of the Bible.

Is aionios in the Old Testament or New Testament?

aionios is a Greek word found in the New Testament.