The sin of indifference, though not explicitly named in Scripture, is a concept that emerges from various biblical teachings and narratives. It refers to a state of apathy or lack of concern towards God, His commandments, and the needs of others. This spiritual condition is often characterized by a failure to act in love, justice, and righteousness, which are central to the Christian life.

Biblical Foundations

1. The Greatest Commandments: Jesus emphasized the importance of love as the foundation of the law. In Matthew 22:37-39 , He states, "‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ This is the first and greatest commandment. And the second is like it: ‘Love your neighbor as yourself.’" Indifference violates these commandments by neglecting the active love required towards God and others.

2. The Parable of the Good Samaritan: In Luke 10:30-37, Jesus tells the parable of the Good Samaritan to illustrate the sin of indifference. The priest and the Levite, who pass by the injured man without helping, exemplify indifference. Their failure to act contrasts with the Samaritan, who shows compassion and mercy. This parable underscores the call to love and serve others, condemning indifference as a failure to fulfill this call.

3. The Sheep and the Goats: In Matthew 25:31-46, Jesus describes the final judgment, where the righteous are separated from the unrighteous based on their actions towards "the least of these." The indifferent, who failed to feed the hungry, clothe the naked, and visit the sick and imprisoned, are condemned. This passage highlights that indifference to the needs of others is tantamount to indifference to Christ Himself.

4. The Church of Laodicea: Revelation 3:15-16 addresses the church in Laodicea, saying, "I know your deeds; you are neither cold nor hot. How I wish you were one or the other! So because you are lukewarm—neither hot nor cold—I am about to vomit you out of My mouth." This rebuke of spiritual lukewarmness serves as a warning against indifference in one's faith and commitment to God.

Theological Implications

Indifference is a sin because it reflects a heart that is not aligned with God's will. It is a passive rebellion against the active love and justice that God commands. Theologically, indifference can be seen as a form of spiritual sloth, where one neglects the duties of love and service. It is a failure to respond to God's grace and to participate in His redemptive work in the world.

Practical Considerations

1. Vigilance in Faith: Believers are called to be vigilant in their faith, actively seeking to love God and others. Hebrews 10:24 encourages, "And let us consider how to spur one another on to love and good deeds." This requires intentionality and a proactive approach to living out one's faith.

2. Compassion and Action: Christians are urged to cultivate compassion and to translate that compassion into action. James 2:15-17 warns against a faith that lacks deeds, stating, "If a brother or sister is without clothes and daily food and one of you says to them, 'Go in peace, stay warm and well fed,' but does not provide for their physical needs, what good is that? So too, faith by itself, if it does not result in action, is dead."

3. Community and Accountability: The Christian community plays a vital role in combating indifference. Believers are encouraged to hold one another accountable and to support each other in living out the gospel. Galatians 6:2 instructs, "Carry one another’s burdens, and in this way you will fulfill the law of Christ."

In summary, the sin of indifference is a significant spiritual issue that the Bible addresses through its teachings on love, compassion, and active faith. It is a call to believers to examine their hearts and to engage fully in the life and mission to which God has called them.