God is the Creator and Ruler of the universe. He has eternally existed in three persons: the Father, the Son, and the Holy Spirit. They are co-equal and are one God. The Son, being Jesus Christ, co-equal with the Father, lived a sinless human life and offered himself as the perfect sacrifice for the sins of all people by dying on a cross. He rose from the grave three days later and ascended into heaven to sit at the right hand of God the Father. He will return someday to reign as King of Kings.
The Bible is God's Word to us. It was written by human authors, under the supernatural guidance of the Holy Spirit. It is the supreme source of truth for Christian beliefs and living. Because it is inspired by God, it has salvation for its end and is truth without any mixture of error.
Salvation is God's free gift to us, but we must accept it. We can never make up for our sin by self-improvement or good works but only by trusting Jesus Christ as God's gift of forgiveness. We must confess our sins and repent and turn from our selfish life and turn to Jesus in faith that we may be saved. Once you are saved, you are saved for eternity and if you have been genuinely saved, you cannot lose your salvation. It is maintained by grace and the power of God.
A New Testament church of the Lord Jesus Christ is a local body of baptized believers who are associated by their common faith and fellowship with Jesus. The local church observes two ordinances: (1) baptism and (2) the Lord's Supper. Baptism is by full immersion in water symbolizing the death and resurrection to new life Jesus brings. The Lord's Supper is a symbolic act of obedience in remember the broken body and shed blood of Jesus Christ. We remember his death and anticipate his coming.