To have the faith of Abraham- that is something to aspire to. God has made us all promises as well, both through his word and to our individual selves. Some of these promises may be easy to claim while others seem as impossible, even laughable, as Sarah conceiving a child in her nineties. But to claim that promise anyway, to never waiver through disbelief despite the seeming impossibilities, is a true example of faith. Whether we chose to believe it or not, God has the power to do what he promised. We can choose to let our head, our heart, our preconceived perceptions of reality, get in the way and make us doubt, or we can choose to let go of what we understand to be possible, strengthen our faith, glorify God through our confidence in Him, and be credited with righteousness.