Well, obviously, we're talking about faith here. I don't know how many of you are familiar with the full story of Abraham, but if you're not, you need to go back and re-read it. (CLick Here) This is the dude who took his son up on a mountain and was going to offer him as the sacrifice. That's right... he was gonna kill his son, because God told him to. I'm not going to ruin it for you. Suffice it to say, Abraham was found to have more faith than any man in the world. This is what Paul is talking about when he says it was recorded for our sakes. Not Abraham's.
This is important! Don't miss this. Paul is still setting up his letter here. I know we're in the fourth chapter, but still, Paul is educated. Remember? He knows he needs to set the stage and the groundwork for the bomb that he's about to drop, which is... Jesus is the Son of God. Moses' law is bunk, and the only way you can enter into heaven is to have... (here it is!) FAITH!. This is why Paul is spending so much time on this subject. The Jews and the gentiles were all aware of the story of Abraham. No one, believer or not, doubted the faith that Abraham had. And this is what Paul was trying to make them see. And here's why. Because Jesus had already ascended into heaven. The only way someone could become a Christ follower, is because they had faith that Jesus was who He said he was. Still holds true today.
So.... how's your faith? BIG question. I'll be honest with you. I've had times when my faith was weak. I think it's a natural occurrence. As long as we live on this world, we will always have Satan planting doubts about things in our lives. Especially our faith. The key is to stay in the word. Equip yourself with the spiritual armor that Paul talks about in Ephesians 6. And don't forget that you are the sons and daughters of THE King.... not "A" king, but "THE" King.
-Robbie