According to the Bible, the gospel—the good news of salvation, is the death, burial, and resurrection of Jesus Christ (1 Cor. 15:3-4). His death on the cross reveals that humankind willfully sinned against God and is lost without hope apart from Jesus Christ (Isa. 53:6; Acts 4:12; Rom. 3:23). That salvation, the forgiveness of sins, is only by grace through faith in the blood of the God-Man, Jesus Christ (Matt. 26:28; Rom. 5:9; Eph. 2:8-9; 1 Pet. 1:18-19; 1 John 1:7). His death pays for our penalty and his obedient life gives us perfect righteousness (2 Cor. 5:21).
This gospel of salvation is received freely by putting faith in Christ (Eph. 2:8-9), repenting of sin through the prompting of the Holy Spirit (1 John 1:9), and being baptized by immersion into His death, burial, and resurrection. This external mode of baptism manifests the inward spiritual reality of the death of our sinful nature (Col. 2:11-13), protection from God’s wrath—being hidden in Christ (1 Pet. 3:21), the forgiveness of our sins (Acts 2:38), union between God and man (Rom. 6:5), the indwelling of the Holy Spirit (Acts 2:38), membership into His Church (Acts 2:41), the joy of our assurance of salvation (Acts 8:39; Titus 3:4-5), and the promise of our resurrection from the dead to eternal life seated in heavenly places (1 Cor. 15:42-57; Eph. 2:6).
Those who receive this salvation by grace through faith in Jesus Christ are adopted into the family of God, sent into the world to proclaim the good news, and commissioned to love and serve the world just as Jesus Himself did (Matt. 28:18-20; Jn. 20:21; Eph. 2:10; 2 Cor. 5:11-21). This love for the church and the gospel gives believers confidence that God, who began a good work in you (John 15:1-8), will carry it on to completion until the day when Jesus returns (Phil. 1:6).