Eternal is sorta a misnomer steaver. Eternal means no beginning or ending, and only God, as Father, Son, and Spirit can make the claim of being eternal. We do have everlasting life as believers of Christ.
Saul of Tarsus was just as lost as you and I was prior to meeting Christ on the Damascus road. However, he, you, I, and all other believers were chosen from before the creation of the world.Christ was the Lamb slain from the creation of the world. God saw us in Christ before He created us. Why? In His perfect foreknowledge...not the foreknowledge mwc is advocating, either...chose us in Christ. Christ was slain from the creation of the world, yet this slaying took place between 29-35 AD...depending upon who you believe. Saul, from God's perspective, saw him in Christ before He spoke 'Let there be light,' yet He saw Him in need of saving when He called out and shined His light upon him.
So, eventhough we were chosen in Christ from before the creation of the world, according to His, not man's, will and purpose, we still needed saved. He saves at the time He has appointed to each and every believer.