1 Peter 1:9 Receiving the end of your faith, even the salvation of your souls.
Salvation is the point, the goal, the purpose, the end result of your faith. God promises that your soul will be saved because you believe in Jesus. Faith is not the cause of salvation; it is the hand that receives the gift of salvation.
When Jesus appears the second time in glory, we who believe will receive the end of our faith. We will see Him as He is in Truth and Glory, the Kingdom is open to us, and we will enjoy Him forever. We will see what salvation really looks like: we will see the ugliness, darkness, and evil of Sin that we have been saved from, and the beauty, glory, and goodness that we have been saved for. For now, faith gives us a blurry glimpse, but then, faith turns into reality when the full, glorious vision of God and His Kingdom is realized. This is the end of our faith. It is why we believe.
Faith in Jesus is a precious gift that the Spirit has given us now through the Gospel. By faith we look at the Cross and see our Sin being judged; by faith we look at the Empty Tomb and experience the New Life; by faith we look at the face of God and feel the Love of God. We see a face that is pleased with us because it is pleased with His Son. We have the promise: faith will receive the full, glorious salvation of the soul.