There is one true God who reveals himself to the world as the Father, Son, and Holy Spirit, commonly referred to today as the Trinity doctrine. (Matthew 28:19)
16 All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness,17 so that the servant of God may be thoroughly equipped for every good work.
A person is saved by the grace of God through faith in Jesus. (Ephesians 2:1-10, Romans 3:23-25) Each individual must, through faith and obedience, reach out to receive this free gift of salvation when they are mature enough to understand the consequences of their sins. (James 2:14-26, Luke 14:25-33)
When people repent and are baptized, their sins are forgiven and the Holy Spirit begins to work in their lives. (Acts 2:36-41)
Through baptism, we become members of God's church. (1 Corinthians 12:12-13)
The greatest command in the Bible is as Jesus stated in Matthew 22:37-39: to love God with all your heart and mind, and to love your neighbor as yourself.
37 Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ 38 This is the first and greatest commandment. 39 And the second is like it: ‘Love your neighbor as yourself.’”
While salvation is based on grace and not our good works, disciples have a responsibility to live and work for God as laid out in the Bible. This includes helping others to become disciples (Matthew 28:18-19), training or discipling one another to love God and stay faithful to Him (Matthew 28:20, Hebrews 3:12-13, Colossians 1:28-29), and serving the poor and needy. (James 1:27)