Jesus is the Way, the Truth and the Life.....God in the flesh! I believe God teaches His plan of salvation from Genesis to Revelation. As I have heard you say, we have to believe in what He says. A believer is a doer of God's Word. If we do what God says in His Word, then we will be found righteous in His Heavenly court through His Son by means of The Cross because He is our advocate to the Father. Repentance and Faith are required for eternal life. Holy Spirit brings life.....sin brings death
. We have to believe Jesus because He is the Word of God and therefore since Jesus is God manifest in the flesh, when we believe Jesus, we are believing God and therefore are saved the same way Abraham was....by believing God..I certainly have a lot to say on this topic, but there's not a lot of room. Read Romans 8:28,29 and 30. I believe they sum it up pretty well.
Stay in the Faith...keep preaching the Gospel......Genesis to Revelation. Jesus is LORD!
Love ya Brother