We request in our daily prayers that Hashem should rebuild Yerushalayim and the Bais HaMikdash quickly in our days.

There is a difference of opinion among the sages concerning the construction of the third Bais HaMikdash.

The Rambam states in Mishneh Torah (Hilchos Melochim 11:1,4)

We begin the seder with the “kadesh” and then proceed to “urechatz”. Our sages ask: Why do we first sanctify ourselves with “kadesh” and only afterwards purify ourselves with the “washing”? The usual order of this process is, as it says in Tehillim (34:15), “Turn away from evil and do good,” suggesting that we should first purify ourselves and then we can do good and achieve holiness.

In fact, Chazal compare those who try

The Haggadah states: “The Torah speaks of four sons, one wise, one wicked …” HaGaon Rav Yisroel Lubchansky asks: Why does the Hagaddah identify the son as a chacham-- wise? It would seem that the title of tzaddik, as the opposite of rosho, would be more appropriate.

Chazal tell us in Mesechta Tamid 32a