I am an Apostolic Pentecostal Christian and Minister at the First Apostolic Church of Biddeford, Maine. "Apostolic" means that I believe and teach the same doctrine as taught by the Apostles in the book of Acts. God never changes (Malachi 3:6, Hebrews 13:8) and neither does the true Church. We are supposed the same Church the Jesus built (Matthew 16:18), the one described on the book of Acts which is the history or the early Church.
"Pentecostal" means that we have experienced the same infilling of the Holy Ghost, just as they did on the day of Pentecost, which is essential to salvation (Acts 2:38, 1 Corinthians 15:1-4).
I believe that the truth of who Jesus is and what true salvation is a mystery hidden to most people including the religious of today. The Apostle Paul wrote; "But if our gospel be hid, it is hid to them that are lost" - 2 Corinthians 4:3. Jesus said "I am the door" (John 10:9), and "I am the way, the truth, and the life: no man cometh unto the Father, but by me" (John 10:14). There is no other way.
One Lord, One Faith, One Baptism
One God and One Lord: God said that He alone was God and Lord, and that there was none other (Isaiah 45:6, 45:21). God said in Deuteronomy 6:4 that He was One Lord. Zechariah 14:9 proclaims that the Lord would be Lord of all the earth and in that day there would be One Lord, and His Name One. 1 Corinthians 8:6 proclaims that the Name of that One Lord is Jesus.
One Faith and One Gospel: But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed (Galatians 1:8).
One Baptism: Matthew 28:19 declares that we are to be baptized in the NAME of the Father, and of the Son, and of the Holy Ghost. That NAME is JESUS (Acts 2:38, 8:12).
Here's my answer to the salvation question, in a mystery. Pray about it, study it out and let God reveal truth to you.
Here are a few verses that shed light on true Salvation through the Gospel: