This could be a long message.
The Bible is the message of salvation from the beginning to the end! The seed of the woman was promised to crush the head of the serpent in Genesis. The Rock which gave Life-giving water to the Israelites in the desert was a type of Christ. The Pillar of cloud by day and the Pillar of fire by night was God watching over His people. Moses was a type of Christ as well since he prophesied and said that God would raise up a Prophet like him in time to redeem His people. The Passover lamb was a type and representation of Christ.
I could go on with the types and representation of a Redeemer in each book of the Bible, but the Message of the Bible is that we can’t save ourselves! We are flawed in our religion and in our own righteousness because we try to make “god” in our image and make “our god” into one who allows us more freedom than we could get from God Himself. God gave us freedom in all forms especially with regard to our choices. We can choose to follow Him or not. There is no pattern or way for us to gain His grace or His forgiveness other than through Jesus and our belief in Him.
Jesus (Yeshua) came and paid the price for our sins so that we would not have to, but you only get to enjoy the benefits of being a Christian if you believe in Him. John’s gospel says it best and you already know the verse, John 3:16-18:
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. 17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved. 18 He that believeth on him is not condemned: but he that believeth not is condemned already because he hath not believed in the name of the only begotten Son of God.
It is your heartfelt belief in Jesus as the Son of God and as your Savior which grants you forgiveness for your sins and entrance into eternity. God is not going to throw you into hell because of your sins, at least that won’t be the only reason. It will be your lack of belief in Jesus as your Savior which condemns you. Yet, today, many do not want to hear about Jesus and salvation through Him. Why?
Because they would have to admit that the Bible must be true in order to believe in Him and most are not willing to believe in the absolute Truth found in God’s Word. Many people, in fact, most people in the world want to create their own version of the truth which fits their ideas and not the ones found in the Bible. Why do they feel this way about God’s Word? Because if they admit that any part of it is true then they have to accept that ALL of it is true as well.
God’s Word is the Truth and, like it or not, there is only one Truth found there: Jesus is the only begotten Son of God and He is the only way to Heaven. Belief in Him and following Him for the rest of your life is the only way to enter into eternity with Him.