The Bible is a book of 66 books and all of them are summed up with a single word: “Salvation.” From the beginning, salvation was God’s plan for human beings and this topic has several characteristics that we cannot lose sight of.
First of all, why do we need salvation? The answer is “because we were lost in our trespasses and sins”, “because we were separated from God”. And that is the main thing, to understand that we are lost and that we need God, that He is the only one capable of saving us.
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Ephesians 2:8 (KJV)