Abraham's faith reposed on God Himself. He knew the God he was dealing with. It was a personal confidence in one whom he could utterly trust.
The real secret of Abraham's whole life was that he was the friend of God, and knew God to be his great, good and faithful Friend, and, taking Him at His word, he had stepped out from all that he knew and loved, and gone forth upon an unknown pathway with none but God.
Beloved, are we trusting not only in the word of God, but have we learned to lean our whole weight upon Himself, the God of infinite love and power, our covenant God and everlasting Friend?
We are told that Abraham glorified God by this life of faith. The true way to glorify God is to let the world see what He is, and what He can do. God does not want us so much to do things, as to let people see what He can do. God is not looking for extraordinary characters as His instruments, but He is looking for humble instruments through whom He can be honored throughout the ages.