Luke 1:45

And blessed is she that believed; for there shall be a performance of those things which were told her from the Lord.

Think of all of the promises of God written to us in the bible. Now, all that takes to be blessed by them is to believe.  The believing I am talking about is not just mental assent or the hope that God would possibly mean it but the fully persuaded faith.  When all doubt is gone and the expectation of the fulfillment of the word kind of faith.  Then, just sitting back and waiting for the performance because the Lord said He would.