One Body Gathered in Worship
At Creation, God established two fundamental mandates for humanity: the cultural mandate and the social mandate. The cultural mandate, pertaining to work, vocation, and study, is evident from the beginning, as God created man to cultivate and govern the earth (Genesis 1:26–28; 2:15). Work is a divine calling and must be performed for the glory of God (Colossians 3:23). Academic and professional development are legitimate ways of exercising this mandate, expanding the abilities God has granted for service and the building up of creation. The social mandate, in turn, involves family and community life. God instituted the family as the foundational cell of society (Genesis 1:27–28; 2:24). Family worship should be a regular practice throughout the week, helping to strengthen the spiritual bonds within the home (Deuteronomy 6:6–9). Moreover, the Christian witness should be evident in the workplace and in all spheres of life.
The church must exercise wisdom in structuring its weekly schedule. It should not commend those who neglect their homes or disregard the common life of the family, nor should it impose an oppressive agenda that impedes family life. Likewise, it must not exalt those who are negligent or slothful in their labor, but rather encourage its members to be faithful stewards in fulfilling the mandates of creation. In this way, the church demonstrates balance, honoring the value of family and labor while preserving the priority of congregational worship.
The sabbath principle is a biblical foundation that teaches the importance of rest and renewal. The Hebrew word Shabbat means “rest,” and the concept is introduced in the creation narrative, where God, upon completing His work, rested on the seventh day and sanctified it (Genesis 2:2–3). This principle was later reaffirmed in the Moral Law, when God commanded the Sabbath to be kept holy (Exodus 20:8–11). The sabbath cycle, also expressed in the sabbatical year and the year of jubilee, reveals the principle of rest as a regular pattern of life, establishing seasons of restoration after cycles of labor.
With the coming of Christ, the sabbath principle finds its fulfillment in Him, who is our rest (Hebrews 4:9–10). Sunday, as the Lord’s Day, replaces the Sabbath as the primary day of worship and rest for the Christian (Revelation 1:10). Sunday must not be treated as a mere day of leisure, but as a consecrated time for worship and spiritual renewal. The early church already gathered on the first day of the week to celebrate the Lord’s Supper and hear apostolic teaching (Acts 20:7; 1 Corinthians 16:2). Thus, for the believer, Sunday is a day of rest in Christ and fellowship with the saints.
The concept of assembly runs throughout the history of God’s people. In the Old Testament, the Hebrew word Qahal designates the gathered people summoned before the Lord (Deuteronomy 9:10; Nehemiah 8:8). In this assembly, young and old, men and women, came together to hear the Word and renew their covenant with God. The reiteration of the Law in Deuteronomy (which means “second law”) emphasizes the significance of the assembly as a space of teaching and communal commitment.
In the New Testament, the Greek word Ekklēsia, meaning “the called-out ones,” is used to describe the church as the visible assembly of God’s people. Jesus promised to build His Ekklēsia (Matthew 16:18), and Paul’s letters show that the local church is to gather physically as one body to express its unity (1 Corinthians 11:18–20). Thus, there is continuity between Qahal and Ekklēsia, for in both Testaments, God’s people are summoned to congregate regularly before the Lord, forming a visible community of faith and worship.
From this perspective, Lord’s Day worship is the culmination of the week. During the week, believers fulfill the cultural mandate through work and study, and the social mandate through family and community life. On Sunday, however, the church gathers as one body in worship. This day also includes the practice of family worship, which strengthens the spiritual life of the home and prepares the family for the Lord’s Day.
Biblically modeled Lord’s Day worship involves the entire church gathered regularly in one place and at one time (One Assembly). This principle expresses the unity of the body of Christ, as Scripture teaches: “When you come together in one place…” (1 Corinthians 11:18–20) and “Let us not neglect meeting together” (Hebrews 10:25). Dividing the congregation into multiple services or practices that fragment the body undermines this unity, for the local church is called to be a visible assembly.
According to the Regulative Principle of Worship, as expressed in the 1689 Baptist Confession of Faith (Chapter 22), worship must include only those elements prescribed by God. These elements are: the reading of Scripture (1 Timothy 4:13), the preaching of the Word (2 Timothy 4:2), congregational prayer (1 Timothy 2:1–2), spiritual songs (Ephesians 5:19; Colossians 3:16), the administration of baptism and the Lord’s Supper (Matthew 28:19–20; 1 Corinthians 11:23–26), the giving of offerings for the church’s support (1 Corinthians 16:2), and the pronouncement of the benediction (2 Corinthians 13:14). These elements, and these alone, must comprise the order of public worship.
Expository preaching holds a central place in worship, for it is through the faithful exposition of the Word that God speaks to His church. This kind of preaching involves reading, explaining, and applying Scripture, following the biblical pattern (Nehemiah 8:8; 2 Timothy 4:1–2; Acts 17:2–3). Expository preaching is not merely reading the text, but explaining it and applying it practically to the life of the church. Without explanation, it is not expository; without application, it is not preaching. Besides edifying the church, expository preaching guards against heresy and leads the congregation toward sound spiritual growth.
The consecration of tithes, offerings, and freewill contributions is also part of worship and a vital expression of adoration. Throughout Scripture, offerings appear as responses of gratitude and recognition of God’s faithfulness. They symbolize faith and dependence, represented in the consecration of “firstfruits.” In addition to their devotional function, offerings also play a didactic role: children learn that milk and bread come not only from labor, but from God’s provision. This teaching prepares the next generation to understand the importance of supporting the Lord’s work.
Faithfulness to Lord’s Day worship, in accordance with biblical principles, yields rich fruit in the life of the church. It promotes doctrinal and practical unity (Ephesians 4:13–14), reinforcing a shared understanding of the faith. It also deepens fellowship and mutual care, as the church grows together as one body (Hebrews 10:24–25). The ongoing teaching of Scripture in worship fosters holiness and spiritual maturity (Colossians 3:16), renewing Christian hope and anchoring the life of the church in the promises of God. Furthermore, the public testimony of faith, made evident in the church’s life, bears witness to the surrounding society.
In summary, the central principle affirmed here is that the church must gather regularly as one body, as one assembled congregation, to worship the triune God, to edify the whole body, and to strengthen unity among its members. As complementary principles, the church affirms that the Lord’s Day must be honored as the Christian Sabbath, consecrated for rest in Christ and corporate worship; that Lord’s Day worship is essential to the church’s life and must be governed by Scripture in accordance with Reformed theology; that worship must include only the elements prescribed in Scripture; that expository preaching must be conducted regularly by a qualified pastor; that the Lord’s Supper is an ordinance for the gathered congregation; and that the giving of tithes and offerings is an act of worship, gratitude, and faith, by which God’s provision is acknowledged and the next generation is taught to support the Lord’s work.
This is the foundation of Lord’s Day worship—a central practice in the church’s communal life, rooted in Scripture and reflecting her commitment to God, to His Word, and to the Reformed tradition.
Summary of Class Taught by Pastor Gilson Santos
Church: Igreja Batista da Graça – São José dos Campos, São Paulo, Brazil
Date: February 16, 2025
This class, led by Pastor Gilson Santos, was part of the ongoing biblical and theological formation of the congregation of Igreja Batista da Graça. It emphasized the centrality of Lord’s Day worship in the life of the church, rooted in the biblical principles of creation, sabbath, and the visible gathered assembly.
