Where the Word of God is spoken, faith is present. Faith is the energy that is in the Word that gives it the ability to bring itself to past in your life.
Let's look at the word spoken in Abraham's life. "As is it written, I have made you a father of many nations according to what was spoken. "So shall your descendents be. And not being weak in faith, he did not waiver at the promise (the spoken word) of God through unbelief, but was strengthened in faith, giving glory to God, and being fully convinced that what he had promised he was also able to perform (Roman 4:17-21). When God spoke these words to Abraham the reality of this truth did not come to past until many years later. "Therefore it is of faith that it might be according to grace so that the promise (the spoken word) might be sure to all the seed, not only to those who are of the law, but also to those who are of the faith of Abraham, who is the father of us all (Roman 4:16).