Life is a complex, multifaceted concept in the Bible. Various Hebrew and Greek terms convey the idea of life. Life is described in both a natural and a theological sense.

Life in the Natural Sense

In its natural sense, “life” may convey the following: (1) the vital principle of animals and humans, (2) the length of time that one has life, (3) the complete plot and cast of characters of an individual’s lifetime, or (4) the means for maintaining life.

First, life is the vital principle of animals and humans. This use of the term is its popular sense. It refers to the quality of having an animate existence or the state of being animate. Therefore, it is expressed in terms of ability or power; one who has life has the power to act. On the other hand, “death” is its antonym; one who is dead no longer acts. In the Bible, life in this sense applies to both animals and humans; however, the quality of life differs because humans are made in the image of God (Gen. 1:26; 5:1; 9:6). Life is manifested in the breath of life, so that one who no longer has the breath of life no longer has life (Gen. 2:7; 6:17; Job 12:10; 27:3; Rev. 11:11). At the same time, life is seated in the blood. For this reason, blood should not be consumed but should instead be poured out and buried (Gen. 9:3–5; Lev. 17:10–16; Deut. 12:23–25). Although life may cease because of physical causes (whether disease, murder, accident, etc.), God is ultimately the Lord of life. He gives life through his breath of life (Gen. 2:7; Ezek. 37:4–14); he sustains life through his spirit (Ps. 104:29–30; cf. Gen. 6:3; 1 Cor. 15:45); he delivers from death (Gen. 5:24; Ps. 30:3; 1 Cor. 15); he gives life and puts to death (Deut. 32:39; 1 Sam. 2:6). Life, therefore, is first and foremost a gift from God.

In a discussion of life as the vital principle, it is important to address the question of the afterlife. The Bible affirms the significance of both the material and the immaterial components of a human being. The body is not merely a shell in which the true person is housed. Death is not the soul’s escape from the body’s prison, as evidenced by the resurrection of the dead (Ezek. 37:1–14; Dan. 12:2; Luke 14:14; 1 Cor. 15). Human beings are not created to live a disembodied existence ultimately. The fate for those who experience eternal life is the resurrection of the body made from an incorruptible source (1 Cor. 15, esp. vv. 42–50). For others, their fate lies in eternal death (Matt. 25:46; Rev. 20:6–15; 21:8).

Second, in both Testaments, “life” may also refer to the duration of animate existence—one’s lifetime. The duration of one’s life in this sense begins at birth and ends at death (Gen. 23:1; 25:7; 47:9, 28; Luke 16:25; Heb. 2:15). This period of time is brief (Ps. 90:10; James 4:14). The Bible describes two ways that one’s lifetime may be extended: first, God gives additional time to a person’s life (2 Kings 20:6; Ps. 61:6; Isa. 38:5); second, one gains longer life by living wisely and honoring God (Prov. 3:2; 4:10; 9:11; 10:27).

Third, sometimes “life” refers to the complete plot and cast of characters of an individual’s lifetime. In other words, “life” may refer to all a person’s activities and relationships (1 Sam. 18:18 KJV; Job 10:1; Luke 12:15; James 4:14).

Fourth, “life” rarely may refer to the means of livelihood (Deut. 24:6; Prov. 27:27; Matt. 6:25; Luke 12:22–23). These passages highlight two aspects of life in this sense: (1) people are responsible to guard life; (2) God gives this life because of his great concern, which exceeds his care for the birds and flowers.

Life as a Theological Concept

Beyond its natural sense, life is developed as a theological concept throughout the Bible.

Old Testament. The first chapters of Genesis set the stage for a rich theological understanding of life. First, God creates all things and prepares them for his purposes. He is the creator of life, and life is a gift from his hand. The pinnacle of his creative activity is the creation of humankind. God blesses the man (Adam) and the woman (Eve) whom he creates. God prepares a special place, a garden, for them, so that they may be able to live in perfect communion with him, under his blessing. At the center of the garden lies the tree of life. The tree of life demonstrates that the garden is both the sphere of God’s provision and the symbol of life itself. At the same time, God commands the man not to eat of the tree of the knowledge of good and evil, “for when you eat from it you will certainly die” (Gen. 2:17).

At this point, life and death take center stage. What follows in the narrative (Gen. 3) is a presentation of the meaning of life and death as theological concepts. Adam and Eve disobey the divine commandment. As a result, they die. However, their death is not death in the natural sense. Instead, when they disobey God’s commandment, there are three results: (1) a curse is pronounced, (2) they are exiled from the garden away from God, and (3) they are prevented from eating from the tree of life (3:14–24). Death in this case is not ceasing to breathe and move but is curse and exile; in other words, to die is to be removed from the place of God’s presence and blessing and be placed under a curse. Life, then, is the opposite: to live is to be settled in the place of God’s presence and blessing.

It is also important to recognize in this narrative that obedience to God’s commandment leads to life, but disobedience to his commandment leads to death. This principle is picked up throughout the Bible. Its clearest expression is found in Lev. 18:5: “Keep my decrees and laws, for the person who obeys them will live by them.”

This narrative also draws an important connection taken up in other parts of the Bible, especially Proverbs: the connection between life and wisdom. In the garden there are two trees at the center: the tree of life and the tree of the knowledge of good and evil. Although there is some question concerning what is precisely meant by the knowledge of good and evil, it is likely that wisdom is in view. Two pieces of evidence support this conclusion: (1) knowledge and wisdom as well as good and evil are central concerns for the book of Proverbs; (2) the narrative associates the tree with wisdom. When Eve considers eating from the tree, she notices that it is like the other trees in that it has a pleasant appearance and is good for food (Gen. 2:9), but it is also distinct from the other trees because it is desirable for making one wise (3:6). By eating the fruit, she and Adam attempt to gain wisdom contrary to God’s command. As a result, this type of wisdom leads to death. However, true wisdom has the opposite effect. It leads to life, being a tree of life itself (esp. Prov. 3:18; also 3:1–2; 4:10–23; 6:23).

Although these themes—life, blessing, obedience, and wisdom—are found in various places throughout the Bible, they come together most explicitly in Deuteronomy. There devotion and obedience to God are viewed as the means of attaining wisdom and understanding (Deut. 4:5–9). Following God leads to living in the land that God had promised and enjoying his blessings there (28:1–14); however, forsaking God leads to all kinds of curses and ultimately to utter defeat and exile from the land (28:15–68). The choice to follow God and obey him or to forsake God and disobey him results in either life or death, good or bad, blessing or curse (30:15–20).

Life as a theological concept therefore has the following characteristics: being in the presence of God rather than exile, and experiencing his blessings rather than his curses. Such life may be attained through devotion and obedience to God and through the wisdom that comes from God.

New Testament. This concept of life forms the background for that of the NT as well. The NT often speaks of eternal life, especially in the writings of John. Eternal life is being in fellowship with God the Father and Jesus Christ (John 17:3). One may experience eternal life before natural death and beyond it into the eternal future (John 3:36; 5:24; 6:54; 10:28). At the same time, eternal life may refer more narrowly only to the time of perfect fellowship with God that lies beyond natural life (Matt. 25:46; Mark 10:30; Rom. 2:7). Because life consists of being in fellowship with God and living in his blessings, John can state that the one who believes in Jesus “has eternal life and will not be judged but has crossed over from death to life” (John 5:24). In other words, the person who believes in Jesus has been transferred from God’s curse to his blessing, from death to life. Furthermore, Jesus declares that he is life, and that those who believe in him will live and not die; that is, they will never be removed from his presence and blessing (John 11:25–26).