Abraham

Today as I read through chapters 20-22 in Genesis I noticed something about Abraham. He receives seven promised from God during chapters 12 through 22. I jotted down these promises as I read, and I noticed that there was always something required of Abraham with each of the promises. This has caused me to wonder. Was Abraham willing to be obedient when God asked him to sacrifice Isaac because he knew God's character? Abraham fulfilled each of the requests from God and God was always faithful to his part of the promise. Did Abraham know, based on past experience, that God would come through for Abraham with regard to Isaac?