And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions: Joel
The seventeenth bracha of Shmoneh Esrei deals with the temple services. We ask Hashem to restore our ability to do the Temple services, and as an extension of that we need the temple back as well. We ask for the temple and the ability to serve in it.
Jews blow the shofar on Rosh Hashanah, the start of the year, summoning the faithful to repentance and proclaiming the sovereignty of God. The shofar is also blown during Elul, the month prior to Rosh Hashanah, as a signal to begin the process of self-exa