The Greek word oikoumenē (οἰκουμένη): World, Earth, Known World, Roman world

In the original Greek texts of the Bible, several distinct words are used to translate the concepts of world, earth, and land. Each carries its own unique meaning, ranging from the physical ground to the collective system of human society. 

Words for "Earth" and "Land"

• Gé (γῆ) - The most common Greek word for earth or land. It can refer to the physical "planet", the literal ground/soil, or a specific geographic region or country (e.g., "the land of Judah"). It appears frequently in the creation account and in contrasts between heaven and earth.
• Oikoumené (οἰκουμένη) - Specifically translated as the "inhabited earth" or "the inhabited world". In the New Testament, it usually refers to the known, civilized world under the influence of the Roman Empire. 

Words for "World"

• Kosmos (κόσμος) - This is the most famous Greek word translated as "world," occurring roughly 186 times in the New Testament. Rather than just meaning the physical "globe", it typically refers to humanity, society, the systems of human civilization, or the worldly systems alienated from God.
• Aiōn (αἰών) - While frequently translated as "world" in older versions (e.g., "the end of the world"), this word literally means an "age," "era," or "lifetime". It refers to the spirit, culture, or timeframe of a particular historical period rather than a physical location. 

The Greek word oikoumenē (οἰκουμένη) appears exactly 15 times in the New Testament. It is most frequently translated into English as "world", "earth", or "Roman world". Depending on the context, it refers to the inhabited earth, known world, the entire human race, or the extent of the Roman Empire. 

The 15 New Testament verses containing oikoumenē are listed below: 

1. Matthew 24:14 – "And this gospel of the kingdom shall be preached in all the world [oikoumenē] for a witness unto all nations; and then shall the end come."
2. Luke 2:1 – "And it came to pass in those days, that there went out a decree from Caesar Augustus, that all the world [oikoumenē] should be taxed."
3. Luke 4:5 – "And the devil, taking him up into an high mountain, shewed unto him all the kingdoms of the world [oikoumenē] in a moment of time."
4. Luke 21:26 – "Men's hearts failing them for fear, and for looking after those things which are coming on the earth [oikoumenē]: for the powers of heaven shall be shaken."
5. Acts 11:28 – "And there stood up one of them named Agabus, and signified by the Spirit that there should be great dearth throughout all the world [oikoumenē]: which came to pass in the days of Claudius Caesar."
6. Acts 17:6 – "And when they found them not, they drew Jason and certain brethren unto the rulers of the city, crying, These that have turned the world [oikoumenē] upside down are come hither also;"
7. Acts 17:31 – "Because he hath appointed a day, in the which he will judge the world [oikoumenē] in righteousness by that man whom he hath ordained..."
8. Acts 19:27 – "So that not only this our craft is in danger to be set at nought; but also that the temple of the great goddess Diana should be despised, and her magnificence should be destroyed, whom all Asia and the world [oikoumenē] worshippeth."
9. Acts 24:5 – "For we have found this man a pestilent fellow, and a mover of sedition among all the Jews throughout the world [oikoumenē], and a ringleader of the sect of the Nazarenes:"
10. Romans 10:18 – "But I say, Have they not heard? Yes verily, their sound went into all the earth [oikoumenē], and their words unto the ends of the world."
11. Hebrews 1:6 – "And again, when he bringeth in the first begotten into the world [oikoumenē], he saith, And let all the angels of God worship him."
12. Hebrews 2:5 – "For unto the angels hath he not put in subjection the world [oikoumenē] to come, whereof we speak."
13. Revelation 3:10 – "Because thou hast kept the word of my patience, I also will keep thee from the hour of temptation, which shall come upon all the world [oikoumenē], to try them that dwell upon the earth."
14. Revelation 12:9 – "And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world [oikoumenē]: he was cast out into the earth, and his angels were cast out with him."
15. Revelation 16:14 – "For they are the spirits of devils, working miracles, which go forth unto the kings of the earth and of the whole world [oikoumenē], to gather them to the battle of that great day of God Almighty."

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