That is way too simplistic.
Let's start with 1 Thessalonians 5:23 - Now may the God of peace Himself sanctify you completely; and may your whole spirit, soul, and body be preserved blameless at the coming of our Lord Jesus Christ.
- Spirit - The Greek word is pneuma, from which we get the word pneumonia. It literally means breath, or wind, or vital spirit, which is breathed into us by God at birth. The verb form of this word pnein means to blow or breathe.
- Soul - The Greek word is psuche. Think of the English word psyche. This is the inner workings of our minds. Our inner man, so to speak; our very being, our capability of rational thought.
- Body - The Greek word is soma. This is our physical bodies - our flesh.
When man sinned, death entered the world. Our breath will eventually leave our bodies, our minds are given over to corruption, and our bodies - well, they pretty much start to deteriorate early on in life.
Our salvation is also threefold.
Our initial salvation happens when we submit our lives to Yeshua and are redeemed through His atonement, or sacrifice on the cross, for our sins. A transaction takes place when we turn to Him in repentance. This is called our justification, and we receive the gift of the Holy Spirit. Our spirit becomes alive because of Him! If you are not sure that you have been redeemed, you probably have not yet done this yet. He is waiting for you to respond to his invitation! Confess to Him your sin and receive His forgiveness. He can do this because He paid our death penalty on the cross, even though He lived a perfect life and did not owe that penalty.
We are also saved through sanctification. This is the process of becoming more like our Messiah as we live out the rest of our lives by the renewing of our minds. This happens through focusing on Him, living for Him, and learning more about Him. Philippians 2:12 tells us to work OUT (not FOR) our salvation with fear and trembling.
Our final salvation is yet to come. We are saved through glorification. When Yeshua returns to Earth, we are given a new, immortal body. This is our ultimate and complete salvation. 1 Corinthians 15:52-53 says the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality.
This salvation is only made possible through Yeshua. Matthew 1:21 tells us "And she will bring forth a Son, and you shall call His name Jesus (the Greek form of Yeshua, which means salvation), for He will save His people from their sins.”