John 1:2: The same was in the beginning with God.
Salvation is what the death of Jesus Christ accomplished for fallen man. When we talk about salvation we also include: repentance, faith, regeneration, justification and adoption.
Sin is connected to the sin of Adam in the Garden of Eden. Adam partook of the fruit that God commanded him not to eat. At that moment Adam became separated from God. Not only did Adam died spiritually he also died physically. This physical and spiritual death passed down to all mankind.
But! Praise the Lord! Jesus Christ came and died on the cross and shed His Blood for us. This death, burial and resurrection provided a way for mankind to be reconciled back to God and pave the way to eternal life.
God revealed a plan for all of humanity to be redeemed. This plan only works for those that will accept the free gift of God in the form of His Son Jesus Christ.
By a child-like faith in the Blood of Jesus Christ for Salvation, a person is reconciled back to God.
Here are some New Testament Scriptures.
Romans 4:3: For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness.
John 8:5-6: Now Moses in the law commanded us, that such should be stoned: but what sayest thou? 6 This they said, tempting him, that they might have to accuse him. But Jesus stooped down, and with his finger wrote on the ground, as though he heard them not.
Galatians 3:8: And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.
Hebrews 4:2: 2 For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.
John 1:45: Philip findeth Nathanael, and saith unto him, We have found him, of whom Moses in the law, and the prophets, did write, Jesus of Nazareth, the son of Joseph.
Titus 2:11: For the grace of God that bringeth salvation hath appeared to all men
God fulfilled His promises and sent His Son Jesus to shed His precious Blood for all mankind. All mankind has to do is to just receive the free gift.