In classical Greek, “world” (kosmos) communicated the idea that the external universe is a well-ordered system. In early Greek usage, the term was used with reference to specific types of social orderings, such as the seating order of rowers (Homer, Od. 13.77), the order of soldiers (Homer, Il. 12.225), and well-ordered political states such as Sparta (Herodotus, Hist. 1.65).

Created World

In the OT, the notion of the created “world” departed from the Greek understanding specifically in that creation is never seen as an independent entity controlled by an impersonal, all-embracing order. Rather, the universe, usually described with the phrase “the heavens and the earth” (Gen. 1:1; 2:1, 4; Ps. 113:6; Jer. 10:11) or at times the “all” or “all things” (Ps. 103:19; Jer. 10:16), is always understood in its relationship to its creator: “He who created the heavens, he is God; he who fashioned and made the earth, he founded it; he did not create it to be empty, but formed it to be inhabited—he says: ‘I am the Lord, and there is no other’ ” (Isa. 45:18). Here, the “world” (“earth”) refers to the material elements that make up the planet (see also Jer. 32:17; Zech. 12:1) and the sum total of the entire universe (cf. Acts 17:24). Even in the account of creation in Gen. 1:1–2:4, where many of the elements of the physical world are mentioned (waters, firmament, stars, etc.), the primary intent of the account is to convey that God is Lord over everything because he is the Creator. Often these created elements that make up the world are praised not for their own inherent beauty, but as a testimony to the majesty, supremacy, and omnipotence of the Creator (Pss. 8; 19:1–6; 33:6–9). In Ps. 148:3–6 the elements within the natural order (kosmos) are instructed to praise God: “Praise him, sun and moon; praise him, all you shining stars. Praise him, you highest heavens and you waters above the skies. Let them praise the name of the Lord, for at his command they were created, and he established them for ever and ever—he issued a decree that will never pass away.”

Though not providing a comprehensive description, the OT does at times refer to how the world is constructed as a whole. The “vault” (Gen. 1:6–20 [RSV: “firmament”]) of heaven separates the waters above from the waters below (which are restrained by God’s sovereign care [Gen. 1:7; 7:11; 49:25]), and this area or chamber rests on “pillars” (Job 26:11). At times the earth is described as a disc with the sanctuary as its center point (Judg. 9:37; Ezek. 38:12), which rests on pillars (Job 9:6). There is an underworld, from which there is no return (Job 10:21); however, the OT does not engage in the kind of speculation regarding the underworld as is evident in the Greco-Roman tradition.

Earth and Its Inhabitants

The term “world” conveys other nuances in the Bible. It often refers to the inhabitants of the earth or the place of human life: “He rules the world in righteousness and judges the peoples with equity” (Ps. 9:8 [cf. Pss. 96:13; 98:9]); or, “Come near, you nations, and listen; pay attention, you peoples! Let the earth hear, and all that is in it, the world, and all that comes out of it!” (Isa. 34:1). Also, in the Gospels “world” is used in this way: “What good is it for someone to gain the whole world, yet forfeit their soul?” (Mark 8:36). Matthew 4:8 refers to all the kingdoms of the world. Also the expressions “coming into the world” (John 1:9; 3:19), “in the world” (John 1:10; 2 Cor. 1:12), and “leave this world” (1 Cor. 5:10) can be understood as referring to the sphere of human life.

Ungodly Culture and Worldview

“World” can also refer to something more than the material world or humanity in general; it can refer to the entire cultural value system or world order that is hostile toward God. The “world” is a common biblical way of referring to the ungodly worldview and lifestyle that characterize human life in its rebellion against the Creator. The course of the world is profoundly affected by fallen humans, through whom death came into the world and rules over it (Rom. 5:12). Therefore, Paul can claim that “the whole world” has become guilty before God (Rom. 3:19), and even the created world is affected by such rebellion (8:20–22). Paul especially links “this world” with “this age” (1 Cor. 3:19; 5:10; Eph. 2:2 NET), which God has judged (Rom. 3:6). John declares that Satan is the “prince of this world” (John 12:31; 14:30; 16:11). Paul refers to Satan as the “god of this world” (2 Cor. 4:4 ESV, NRSV, NASB), who is able to blind individuals to the truth and who animates human rebellion (Eph. 2:2). In this sense, God and the world are strictly separate: “Don’t you know that friendship with the world means enmity against God? Therefore, anyone who chooses to be a friend of the world becomes an enemy of God” (James 4:4). Because of this call to an exclusive relationship with God, believers are mandated to resist and even confront the world. Followers of Christ must not be taken captive by philosophy or the “elemental spiritual forces of this world” (Col. 2:8, 20), since, as Paul says, “the world has been crucified to me, and I to the world” (Gal. 6:14).

But it is the world that designates the location and object of God’s saving activity. Indeed, God sent his Son into this world in order to reconcile it to himself (2 Cor. 5:19). Jesus, the sacrificial Lamb of God, “takes away the sins of the world” (John 1:29). Out of love for this world, God sent his Son (John 3:1), not to judge it but to save it: “God did not send his Son into the world to condemn the world, but to save the world through him” (John 3:17).

Although believers live in the world (1 Cor. 5:10; Phil. 2:15) and must have dealings with the world, ultimately they are not of the world (John 17:14). Remaining in Christ, believers are able to demonstrate in the world the belief and practice of the new commandment to love (John 13:34; 15:9). Therefore, Christians must maintain a critical distance from the world’s system: “Do not love the world or anything in the world. If anyone loves the world, love for the Father is not in them. For everything in the world—the lust of the flesh, the lust of the eyes, and the pride of life—comes not from the Father but from the world” (1 John 2:15–16 [cf. James 1:27; 4:4]). Believers are to avoid the seductive power of the world and not abandon themselves to it; they are to follow their Lord in proclaiming God’s project of reconciling the world to himself through the death and resurrection of Jesus Christ (2 Cor. 5:18).