Definition and Overview:
Practical sacrifice in the Christian context refers to the act of giving up personal desires, resources, or comforts for the sake of serving God and others. It is a tangible expression of faith and devotion, reflecting the believer's commitment to live according to God's will. This concept is deeply rooted in biblical teachings and is exemplified through various scriptural narratives and instructions.

Biblical Foundations:

1. Old Testament Context:
In the Old Testament, sacrifice was primarily associated with the offering of animals and other goods as a means of atonement and worship. However, practical sacrifice extends beyond ritualistic offerings to encompass acts of obedience and service. The prophet Samuel emphasized this when he declared, "Does the LORD delight in burnt offerings and sacrifices as much as in obeying the voice of the LORD? Behold, obedience is better than sacrifice, and attentiveness is better than the fat of rams" (1 Samuel 15:22).

2. New Testament Teachings:
The New Testament shifts the focus from ritual sacrifices to the living sacrifice of one's life. Romans 12:1 urges believers, "Therefore I urge you, brothers, on account of God’s mercy, to offer your bodies as living sacrifices, holy and pleasing to God, which is your spiritual service of worship" . This passage highlights the call for Christians to dedicate their entire being to God's service, embodying practical sacrifice in daily life.

Examples of Practical Sacrifice:

1. Jesus Christ:
The ultimate example of practical sacrifice is found in Jesus Christ, who "humbled Himself and became obedient to death—even death on a cross" (Philippians 2:8). His sacrificial death provided the means for humanity's redemption and serves as the model for selfless love and service.

2. The Early Church:
The early Christians exemplified practical sacrifice through their communal living and generosity. Acts 2:44-45 describes how "all the believers were together and had everything in common. Selling their possessions and goods, they shared with anyone who was in need" . This spirit of sacrifice fostered unity and met the needs of the community.

3. Apostle Paul:
The Apostle Paul frequently spoke of his own sacrifices for the sake of the Gospel. In Philippians 3:7-8, he states, "But whatever was gain to me I count as loss for the sake of Christ. More than that, I count all things as loss compared to the surpassing excellence of knowing Christ Jesus my Lord, for whom I have lost all things" . Paul's life was marked by enduring hardships and relinquishing personal gains to advance the message of Christ.

Practical Applications:

1. Service to Others:
Practical sacrifice often manifests in serving others, as instructed in Galatians 5:13, "For you, brothers, were called to freedom; but do not use your freedom as an opportunity for the flesh. Rather, serve one another in love" . Acts of kindness, charity, and support for those in need are expressions of this sacrificial love.

2. Stewardship of Resources:
Christians are called to be good stewards of their resources, using them to further God's kingdom. This may involve financial giving, volunteering time, or sharing talents for the benefit of the church and community.

3. Personal Holiness:
Practical sacrifice also includes the pursuit of personal holiness, as believers strive to live in a manner that honors God. This involves resisting sinful desires and making choices that reflect Christ's character, as encouraged in 1 Peter 1:15-16, "But just as He who called you is holy, so be holy in all you do, for it is written: 'Be holy, because I am holy'" .

Conclusion:
Practical sacrifice is a vital aspect of the Christian life, calling believers to live out their faith through acts of love, service, and devotion. It is a response to God's grace and a reflection of Christ's sacrificial love, impacting both the individual and the broader community.