In Christ, God has provided for man a full and complete salvation. This full salvation includes our whole being: spirit, soul, and body. In God's salvation, man's spirit is regenerated, his soul is being transformed, and his body will be transfigured.
In order to be saved, one must have a living faith in the Person and work of Jesus Christ, the Son of God. Every genuinely saved one has what the Bible calls the "common faith" (Titus 1:4), which includes what we must believe in order to be saved: we must believe that the Bible is the complete divine revelation wholly inspired by God; that there is a unique Triune God, the Father, the Son, and the Spirit; that Jesus Christ died on the cross for our sins, shedding His blood for our redemption; that on the third day He was bodily raised from the dead; that He has been exalted to the right hand of God and made the Lord of all; and that He is coming again for His own and to set up His kingdom on the earth.
Eternal salvation is by grace through faith, not by our works.
In order to be saved, one must have a living contact with Jesus Christ. Therefore, in bringing unbelievers to salvation, we emphasize prayer and calling on the name of the Lord. According to Romans 10:9 and 10, if a man is to be saved, he must believe in his heart and confess with his mouth.
Once a person has been saved, he may have both the assurance of salvation and the security of salvation. Once we are saved, we are saved forever.