We want Eliyahu the prophet to come to herald the age of the Moshiach… but that will not be enough. We want the Moshiach to come and bring the end of this final exile… but that will not be enough. We want peace in the world… but that will not be enough. We want the 3rd and Final Temple to come… but that will not be enough. We want the resurrection of the dead when all the righteous will come back to life… but that will not be enough. We want the fulfillment of all the prophecies… but that will not be enough.

     There is only One Thing that will be enough; that will completely satisfy us; seeing Hashem's revealed Presence, the Shechinah. This is the only "Thing" that will ever be enough.

     Dayeinu … Sha-Dai (That which is enough)