The term "earthly nature" in biblical theology often refers to the aspects of human existence that are bound to the physical world and are in contrast to the spiritual or divine nature. This concept is frequently discussed in the context of the fallen state of humanity and the struggle between flesh and spirit.

Biblical References

1. Colossians 3:5 : "Put to death, therefore, the components of your earthly nature: sexual immorality, impurity, lust, evil desires, and greed, which is idolatry." This verse highlights the sinful tendencies associated with the earthly nature, urging believers to actively reject these behaviors as part of their spiritual transformation.

2. Galatians 5:19-21 : "The acts of the flesh are obvious: sexual immorality, impurity, and debauchery; idolatry and sorcery; hatred, discord, jealousy, and rage; rivalries, divisions, factions, and envy; drunkenness, carousing, and the like. I warn you, as I did before, that those who practice such things will not inherit the kingdom of God." Here, the "acts of the flesh" are synonymous with the earthly nature, emphasizing the moral and ethical implications of living according to the flesh.

3. Romans 8:5-8 : "Those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit. The mind of the flesh is death, but the mind of the Spirit is life and peace, because the mind of the flesh is hostile to God: It does not submit to God’s law, nor can it do so. Those controlled by the flesh cannot please God." This passage contrasts the earthly nature with the spiritual life, underscoring the incompatibility of the flesh with God's will.

Theological Implications

The earthly nature is often associated with the concept of original sin, which suggests that humanity is inherently flawed due to the fall of Adam and Eve. This nature is characterized by a propensity towards sin and a focus on worldly desires and pleasures. The New Testament frequently addresses the need for believers to overcome their earthly nature through the power of the Holy Spirit.

Transformation and Renewal

The process of sanctification involves the transformation of the believer's earthly nature into one that reflects the character of Christ. This is achieved through the renewal of the mind and the cultivation of spiritual virtues. Romans 12:2 states, "Do not be conformed to this world, but be transformed by the renewing of your mind. Then you will be able to discern what is the good, pleasing, and perfect will of God."

Practical Application

Believers are called to live in a manner that reflects their new identity in Christ, which involves a conscious effort to reject the desires of the earthly nature. This includes practicing self-control, pursuing righteousness, and engaging in spiritual disciplines such as prayer, study of Scripture, and fellowship with other believers.

Conclusion

While the earthly nature represents the fallen state of humanity, the hope of the Gospel is that through Christ, believers can overcome these tendencies and live a life that is pleasing to God. The struggle between the flesh and the spirit is a central theme in Christian discipleship, emphasizing the need for ongoing spiritual growth and dependence on the Holy Spirit.